<!DOCTYPE html><html><head><meta property="mw:TimeUuid" content="14dd4de0-6437-11ed-aa5c-577241f30c8d"/><meta charset="utf-8"/><meta property="mw:pageId" content="15396220"/><meta property="mw:pageNamespace" content="0"/><link rel="dc:replaces" resource="mwr:revision/1106895035"/><meta property="mw:revisionSHA1" content="ae598492feb10275c47b8a142a0210630ae217c5"/><meta property="dc:modified" content="2022-11-14T16:12:02.000Z"/><meta property="mw:htmlVersion" content="2.6.0"/><meta property="mw:html:version" content="2.6.0"/><title>NK.pl - WikiMili, The Best Wikipedia Reader</title><meta property="mw:moduleStyles" content="ext.cite.style|ext.cite.styles"/><meta href="/w/load.php?lang=en&amp;modules=ext.cite.style%7Cext.cite.styles%7Cmediawiki.skinning.content.parsoid%7Cmediawiki.skinning.interface%7Csite.styles&amp;only=styles&amp;skin=vector"/><meta http-equiv="content-language" content="en"/><meta http-equiv="vary" content="Accept"/><link rel="canonical" href="https://wikimili.com/en/NK.pl"/><link rel="stylesheet" href="/a.css"/><meta name="YahooSeeker" content="INDEX, FOLLOW"/><meta name="msnbot" content="INDEX, FOLLOW"/><meta name="googlebot" content="INDEX, FOLLOW"/><meta name="robots" content="index, follow"/><meta name="viewport" content="width=device-width"><meta property="og:type" content="article"/><meta property="og:site_name" content="WikiMili.com"/><meta name="twitter:card" content="summary_large_image"/><meta name="twitter:domain" content="WikiMili.com"/><meta name="twitter:site" content="@wikimili"/><meta name="description" content="NK.pl, formerly Nasza-klasa.pl (English: Our-class.pl), was a Polish school-based social networking service used by alumni and students. NK.pl was owned and administered by Ringier Axel Springer Polska."/><meta property="og:description" content="NK.pl, formerly Nasza-klasa.pl (English: Our-class.pl), was a Polish school-based social networking service used by alumni and students. NK.pl was owned and administered by Ringier Axel Springer Polska."/><meta name="twitter:description" content="NK.pl, formerly Nasza-klasa.pl (English: Our-class.pl), was a Polish school-based social networking service used by alumni and students. NK.pl was owned and administered by Ringier Axel Springer Polska."/><meta property="og:title" content="NK.pl - WikiMili, The Best Wikipedia Reader"/><meta name="twitter:title" content="NK.pl - WikiMili, The Best Wikipedia Reader"/><meta property="og:url" content="https://wikimili.com/en/NK.pl"/><meta name="twitter:url" content="https://wikimili.com/en/NK.pl"/><script type="text/javascript" src="/a.js"></script></head><body id="mwAA" lang="en" class="mw-content-ltr sitedir-ltr ltr mw-body-content parsoid-body mediawiki mw-parser-output" dir="ltr"><div id="header"> <a id="miliLogo" href="https://wikimili.com">WikiMili</a> </div><h1 id="firstHeading" class="firstHeading" lang="en">NK.pl</h1><span class="updated-holder">Last updated <time class="updated" datetime="2022-11-15">November 15, 2022</time></span><section data-mw-section-id="0" id="mwAQ"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none" about="#mwt1"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;short description&quot;,&quot;href&quot;:&quot;./Template:Short_description&quot;},&quot;params&quot;:{&quot;1&quot;:{&quot;wt&quot;:&quot;Polish social networking service&quot;}},&quot;i&quot;:0}}]}" id="mwAg">Polish social networking service</div><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_short_description" about="#mwt1"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Short_description_matches_Wikidata" about="#mwt1" id="mwAw"/><style data-mw-deduplicate="TemplateStyles:r1097763485" typeof="mw:Extension/templatestyles mw:Transclusion" about="#mwt2" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;More citations needed&quot;,&quot;href&quot;:&quot;./Template:More_citations_needed&quot},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;December 2021&quot}},&quot;i&quot;:0}}]}" id="mwBA">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}html.client-js body.skin-minerva .mw-parser-output .mbox-text-span{margin-left:23px!important}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation" about="#mwt2"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"> <a onclick="showImg(this)" id="Question_book-new.svg" class="mw-file-description"><img alt="Question book-new.svg" resource="./File:Question_book-new.svg" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" data-file-width="512" data-file-height="399" data-file-type="drawing" height="39" width="50" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x"/></a> </span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a> </b>.<span class="hide-when-compact"> Please help <a rel="mw:ExtLink" href="//en.wikipedia.org/w/index.php?title=NK.pl&amp;action=edit" class="external text">improve this article</a> by <a rel="mw:WikiLink" class="new" data-href="//en.wikipedia.org/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br/><small><span class="plainlinks"><i>Find sources:</i><span typeof="mw:Entity">&#160;</span> <a rel="mw:ExtLink nofollow" href="//www.google.com/search?as_eq=wikipedia&amp;q=%22NK.pl%22" class="external text">"NK.pl"</a> <span typeof="mw:Entity">&#160;</span>&#8211;<span typeof="mw:Entity">&#160;</span> <a rel="mw:ExtLink nofollow" href="//www.google.com/search?tbm=nws&amp;q=%22NK.pl%22+-wikipedia&amp;tbs=ar:1" class="external text">news</a>&#160;<b>&#183;</b> <a rel="mw:ExtLink nofollow" href="//www.google.com/search?&amp;q=%22NK.pl%22&amp;tbs=bkt:s&amp;tbm=bks" class="external text">newspapers</a>&#160;<b>&#183;</b> <a rel="mw:ExtLink nofollow" href="//www.google.com/search?tbs=bks:1&amp;q=%22NK.pl%22+-wikipedia" class="external text">books</a>&#160;<b>&#183;</b> <a rel="mw:ExtLink nofollow" href="//scholar.google.com/scholar?q=%22NK.pl%22" class="external text">scholar</a>&#160;<b>&#183;</b> <a rel="mw:ExtLink nofollow" href="https://www.jstor.org/action/doBasicSearch?Query=%22NK.pl%22&amp;acc=on&amp;wc=on" class="external text">JSTOR</a> </span></small></span><span class="date-container"><i>(<span class="date">December 2021</span>)</i></span><span class="hide-when-compact"><i> (<small> <a rel="mw:WikiLink" class="new" data-href="//en.wikipedia.org/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this template message</a> </small>)</i></span></div></td></tr></tbody></table><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_needing_additional_references_from_December_2021" about="#mwt2"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_needing_additional_references" about="#mwt2" id="mwBQ"/><style data-mw-deduplicate="TemplateStyles:r1066479718" typeof="mw:Extension/templatestyles mw:Transclusion" about="#mwt6" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Infobox website&lt;!-- infobox source:Tradus plc --&gt;\n&quot;,&quot;href&quot;:&quot;./Template:Infobox_website&quot},&quot;params&quot;:{&quot;name&quot;:{&quot;wt&quot;:&quot;NK.pl&quot},&quot;logo&quot;:{&quot;wt&quot;:&quot;Logo NK.svg&quot},&quot;company_type&quot;:{&quot;wt&quot;:&quot;[[Privately held company]]&quot},&quot;owner&quot;:{&quot;wt&quot;:&quot;Ringier Axel Springer Polska&quot},&quot;homepage&quot;:{&quot;wt&quot;:&quot;{{URL|http://www.nk.pl/}}&quot},&quot;website_type&quot;:{&quot;wt&quot;:&quot;[[Social network]]&quot},&quot;registration&quot;:{&quot;wt&quot;:&quot;Required&quot},&quot;founded&quot;:{&quot;wt&quot;:&quot;{{start date and age|2006|11|11}}&quot},&quot;dissolved&quot;:{&quot;wt&quot;:&quot;{{end date and age|2021|07|27}}&quot},&quot;current_status&quot;:{&quot;wt&quot;:&quot;Defunct&quot}},&quot;i&quot;:0}}]}" id="mwBg">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}</style><table class="infobox vcard" about="#mwt6" id="mwBw"><caption class="infobox-title fn org">NK.pl</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"> <a onclick="showImg(this)" id="Logo_NK.svg" class="mw-file-description"><img resource="./File:Logo_NK.svg" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Logo_NK.svg/220px-Logo_NK.svg.png" decoding="async" data-file-width="567" data-file-height="567" data-file-type="drawing" height="220" width="220" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Logo_NK.svg/330px-Logo_NK.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Logo_NK.svg/440px-Logo_NK.svg.png 2x" alt="Logo NK.svg"/></a> </span></td></tr><tr><th scope="row" class="infobox-label"> <a rel="mw:WikiLink" title="Types of business entity" class="mw-redirect" onclick="openRedirectLink(&quot;Types_of_business_entity&quot;)">Type of business</a> </th><td class="infobox-data category"> <a rel="mw:WikiLink" href="./Privately_held_company" title="Privately held company">Privately held company</a> </td></tr><tr><th scope="row" class="infobox-label"><div style="display: inline-block; line-height: 1.2em; padding: .1em 0;">Type of site</div></th><td class="infobox-data"> <a rel="mw:WikiLink" href="./Social_network" title="Social network">Social network</a> </td></tr><tr><th scope="row" class="infobox-label">Founded</th><td class="infobox-data">November<span typeof="mw:Entity">&#160;</span>11, 2006<span class="noprint"><span typeof="mw:Entity">;</span><span typeof="mw:Entity"></span>16 years ago</span><span style="display:none"><span typeof="mw:Entity">&#160;</span>(<span class="bday dtstart published updated">2006-11-11</span>)</span></td></tr><tr><th scope="row" class="infobox-label"> <a rel="mw:WikiLink" href="./Dissolution_(law)" title="Dissolution (law)">Dissolved</a> </th><td class="infobox-data">July<span typeof="mw:Entity">&#160;</span>27, 2021<span class="noprint"><span typeof="mw:Entity">;</span><span typeof="mw:Entity"></span>15 months ago</span><span style="display:none"><span typeof="mw:Entity">&#160;</span>(<span class="dtend">2021-07-27</span>)</span></td></tr><tr><th scope="row" class="infobox-label">Owner</th><td class="infobox-data">Ringier Axel Springer Polska</td></tr><tr><th scope="row" class="infobox-label">URL</th><td class="infobox-data url"><span class="url"> <a rel="mw:ExtLink nofollow" href="http://www.nk.pl/" class="external text">www<wbr/>.nk<wbr/>.pl</a> </span></td></tr><tr><th scope="row" class="infobox-label">Registration</th><td class="infobox-data">Required</td></tr><tr><th scope="row" class="infobox-label">Current<span typeof="mw:Entity">&#160;</span>status</th><td class="infobox-data category">Defunct</td></tr></tbody></table><p id="mwCA"><b id="mwCQ">NK.pl</b>, formerly <b id="mwCg">Nasza-klasa.pl</b> (English: <i id="mwCw">Our-class.pl</i>), was a Polish school-based <a rel="mw:WikiLink" href="./Social_networking_service" title="Social networking service" id="mwDA">social networking service</a> used by alumni and students.<sup about="#mwt16" class="mw-ref reference" id="cite_ref-1"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-1&quot;}}"> <a href="./NK.pl#cite_note-1" style="counter-reset: mw-Ref 1;" id="mwDQ"><span class="mw-reflink-text" id="mwDg">[1]</span></a> </sup> NK.pl was owned and administered by Ringier Axel Springer Polska.<sup about="#mwt17" class="mw-ref reference" id="cite_ref-close_2-0"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;close&quot;}}"> <a href="./NK.pl#cite_note-close-2" style="counter-reset: mw-Ref 2;" id="mwDw"><span class="mw-reflink-text" id="mwEA">[2]</span></a> </sup></p><h2 id="listHeader">Contents</h2><ul id="listClass"><li> <a href="#History">History</a> </li><li> <a href="#Services">Services</a> </li><li> <a href="#See_also">See also</a> </li><li> <a href="#References">References</a> </li><li> <a href="#External_links">External links</a> </li></ul></section><section data-mw-section-id="1" id="mwEQ"><h2 id="History">History</h2><p id="mwEg">NK.pl was launched on 11 November 2006 by <a rel="mw:WikiLink" href="./Maciej_Popowicz" title="Maciej Popowicz" id="mwEw">Maciej Popowicz</a>, Pawe&#322; Olchawa, Micha&#322; Bartoszkiewicz, and &#321;ukasz Adzi&#324;ski, four college students studying computer science at the <a rel="mw:WikiLink" href="./University_of_Wroc&#322;aw" title="University of Wroc&#322;aw" id="mwFA">University of Wroc&#322;aw</a>.<sup about="#mwt22" class="mw-ref reference" id="cite_ref-3"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-3&quot;}}"> <a href="./NK.pl#cite_note-3" style="counter-reset: mw-Ref 3;" id="mwFQ"><span class="mw-reflink-text" id="mwFg">[3]</span></a> </sup><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_with_failed_verification" about="#mwt19"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Failed verification&quot;,&quot;href&quot;:&quot;./Template:Failed_verification&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;May 2021&quot;}},&quot;i&quot;:0}}]}" id="mwFw"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_failed_verification_from_May_2021" about="#mwt19"/><sup class="noprint Inline-Template " style="white-space:nowrap;" about="#mwt19" id="mwGA"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="The material near this tag failed verification of its source citation(s). (May 2021)">failed verification</span></a> </i><span typeof="mw:Entity">]</span></sup> The company was headquartered in <a rel="mw:WikiLink" href="./Wroc&#322;aw" title="Wroc&#322;aw" id="mwGQ">Wroc&#322;aw</a>, Poland, and its name came from the song "<i id="mwGg">Nasza Klasa</i>" by <a rel="mw:WikiLink" href="./Jacek_Kaczmarski" title="Jacek Kaczmarski" id="mwGw">Jacek Kaczmarski</a>.<link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_with_unsourced_statements" about="#mwt20"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Citation needed&quot;,&quot;href&quot;:&quot;./Template:Citation_needed&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;May 2021&quot;}},&quot;i&quot;:0}}]}" id="mwHA"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_unsourced_statements_from_May_2021" about="#mwt20"/><sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;" about="#mwt20" id="mwHQ"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2021)">citation needed</span></a> </i><span typeof="mw:Entity">]</span></sup></p><p id="mwHg">The website enjoyed success, and one 2009 study called it a "model example of the &#8216;<a rel="mw:WikiLink" href="./Rags_to_riches" title="Rags to riches" id="mwHw">rags to riches</a>&#8217; ideal of an enterprise construed with no financial funding and no institutional support (neither from ASP/<a rel="mw:WikiLink" href="./Internet_service_provider" title="Internet service provider" id="mwIA">ISP corporations</a> nor from central/local administration)".<sup about="#mwt26" class="mw-ref reference" id="cite_ref-iisit_4-0"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;iisit&quot;}}"> <a href="./NK.pl#cite_note-iisit-4" style="counter-reset: mw-Ref 4;" id="mwIQ"><span class="mw-reflink-text" id="mwIg">[4]</span></a> </sup> In 2009, the service had 13.5 million active users.<sup about="#mwt27" class="mw-ref reference" id="cite_ref-portal_5-0"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;portal&quot;}}"> <a href="./NK.pl#cite_note-portal-5" style="counter-reset: mw-Ref 5;" id="mwIw"><span class="mw-reflink-text" id="mwJA">[5]</span></a> </sup> NK.pl then ranked among the top five websites used in Poland, behind Google.pl, <a rel="mw:WikiLink" href="./Onet.pl" title="Onet.pl" id="mwJQ">Onet.pl</a>, and Wirtualna Polska, and it was visited by more than 50% of Polish Internet users each month (with 10% of the traffic coming from abroad).<sup about="#mwt32" class="mw-ref reference" id="cite_ref-iisit_4-1"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;iisit&quot;},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-iisit-4&quot;}}"> <a href="./NK.pl#cite_note-iisit-4" style="counter-reset: mw-Ref 4;" id="mwJg"><span class="mw-reflink-text" id="mwJw">[4]</span></a> </sup></p><p id="mwKA">As of July 2009 86% of its users lived in Poland, according to <a rel="mw:WikiLink" href="./Alexa_Internet" title="Alexa Internet" id="mwKQ">Alexa</a>. The site was also popular in Norway, where it was the fifth most popular social networking website in 2009.<sup about="#mwt41" class="mw-ref reference" id="cite_ref-bb_6-0"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;bb&quot;},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-bb-6&quot;}}"> <a href="./NK.pl#cite_note-bb-6" style="counter-reset: mw-Ref 6;" id="mwKg"><span class="mw-reflink-text" id="mwKw">[6]</span></a> </sup><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_with_failed_verification" about="#mwt35"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Failed verification&quot;,&quot;href&quot;:&quot;./Template:Failed_verification&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;May 2021&quot;}},&quot;i&quot;:0}}]}" id="mwLA"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_failed_verification_from_May_2021" about="#mwt35"/><sup class="noprint Inline-Template " style="white-space:nowrap;" about="#mwt35" id="mwLQ"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="The material near this tag failed verification of its source citation(s). (May 2021)">failed verification</span></a> </i><span typeof="mw:Entity">]</span></sup> In June 2010, a rebranding and changes to terms of use demanding that users allow the portal to use their profile photo commercially along with select private information, triggered mass exodus.<link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_with_unsourced_statements" about="#mwt36"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Citation needed&quot;,&quot;href&quot;:&quot;./Template:Citation_needed&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;May 2021&quot;}},&quot;i&quot;:0}}]}" id="mwLg"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_unsourced_statements_from_May_2021" about="#mwt36"/><sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;" about="#mwt36" id="mwLw"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2021)">citation needed</span></a> </i><span typeof="mw:Entity">]</span></sup> As of August 2014 the number of registered users had plummeted to less than 7 million, with many users having switched to <a rel="mw:WikiLink" href="./Facebook" title="Facebook" id="mwMA">Facebook</a>.<sup about="#mwt46" class="mw-ref reference" id="cite_ref-7"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-7&quot;}}"> <a href="./NK.pl#cite_note-7" style="counter-reset: mw-Ref 7;" id="mwMQ"><span class="mw-reflink-text" id="mwMg">[7]</span></a> </sup></p><p id="mwMw">In November 2014 Ringier Axel Springer Polska signed agreement to buy NK.pl from Excolimp Investemnts<sup about="#mwt52" class="mw-ref reference" id="cite_ref-8"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-8&quot;}}"> <a href="./NK.pl#cite_note-8" style="counter-reset: mw-Ref 8;" id="mwNA"><span class="mw-reflink-text" id="mwNQ">[8]</span></a> </sup>.</p><p id="mwNg">On May 26, 2021, NK.pl announced its closure effective July 27 of the same year.<sup about="#mwt58" class="mw-ref reference" id="cite_ref-close_2-1"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;close&quot;},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-close-2&quot;}}"> <a href="./NK.pl#cite_note-close-2" style="counter-reset: mw-Ref 2;" id="mwNw"><span class="mw-reflink-text" id="mwOA">[2]</span></a> </sup></p></section><section data-mw-section-id="2" id="mwOQ"><h2 id="Services">Services</h2><p id="mwOg">Registered users could pick their school and graduation year. Users were also able to create personal pages with details about their life and past education.</p><p id="mwOw">NK.pl offered a wide variety of <a rel="mw:WikiLink" href="./Internet_privacy" title="Internet privacy" id="mwPA">privacy</a> settings, additionally offering up-to-date advice and instructions about privacy on NK.pl as well as the portal.<sup about="#mwt68" class="mw-ref reference" id="cite_ref-Klasa_9-0"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;Klasa&quot;},&quot;body&quot;:{&quot;id&quot;:&quot;mw-reference-text-cite_note-Klasa-9&quot;}}"> <a href="./NK.pl#cite_note-Klasa-9" style="counter-reset: mw-Ref 9;" id="mwPQ"><span class="mw-reflink-text" id="mwPg">[9]</span></a> </sup><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Wikipedia_articles_needing_clarification_from_May_2021" about="#mwt60"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Clarify&quot;,&quot;href&quot;:&quot;./Template:Clarify&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;May 2021&quot;},&quot;reason&quot;:{&quot;wt&quot;:&quot;What portal? Is NK.pl not the portal?&quot;}},&quot;i&quot;:0}}]}" id="mwPw"/><sup class="noprint Inline-Template " style="margin-left:0.1em; white-space:nowrap;" about="#mwt60" id="mwQA"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify"><span title="What portal? Is NK.pl not the portal? (May 2021)" about="#mwt62" typeof="mw:ExpandedAttrs" data-mw="{&quot;attribs&quot;:[[{&quot;txt&quot;:&quot;title&quot;},{&quot;html&quot;:&quot;What portal? Is NK.pl not the portal?&lt;span typeof=\&quot;mw:Nowiki\&quot; data-parsoid=\&quot;{}\&quot;&gt;&lt;/span&gt; (May 2021)&quot;}]]}">clarification needed</span></a> </i><span typeof="mw:Entity">]</span></sup> It had a trust and safety team that worked with law enforcement to resolve matters related to threatening and dangerous posts and other illegal activity.<link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_with_unsourced_statements" about="#mwt63"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;citation needed&quot;,&quot;href&quot;:&quot;./Template:Citation_needed&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;February 2015&quot;}},&quot;i&quot;:0}}]}" id="mwQQ"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_unsourced_statements_from_February_2015" about="#mwt63"/><sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;" about="#mwt63" id="mwQg"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2015)">citation needed</span></a> </i><span typeof="mw:Entity">]</span></sup></p><p id="mwQw">NK.pl also cooperated with childcare services, such as the Nobody's Children Foundation, which takes care of psychological needs and healthy mental development of children.<sup about="#mwt71" class="mw-ref reference" id="cite_ref-Klasa_9-1"   data-mw="{&quot;name&quot;:&quot;ref&quot;,&quot;attrs&quot;:{&quot;name&quot;:&quot;Klasa&quot;}}"> <a href="./NK.pl#cite_note-Klasa-9" style="counter-reset: mw-Ref 9;" id="mwRA"><span class="mw-reflink-text" id="mwRQ">[9]</span></a> </sup><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:All_articles_with_failed_verification" about="#mwt70"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;failed verification&quot;,&quot;href&quot;:&quot;./Template:Failed_verification&quot;},&quot;params&quot;:{&quot;date&quot;:{&quot;wt&quot;:&quot;May 2021&quot;}},&quot;i&quot;:0}}]}" id="mwRg"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Articles_with_failed_verification_from_May_2021" about="#mwt70"/><sup class="noprint Inline-Template " style="white-space:nowrap;" about="#mwt70" id="mwRw"><span typeof="mw:Entity">[</span><i> <a rel="mw:WikiLink" target="_blank" href="//en.wikipedia.org/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="The material near this tag failed verification of its source citation(s). (May 2021)">failed verification</span></a> </i><span typeof="mw:Entity">]</span></sup></p></section><section data-mw-section-id="3" id="mwSA"><h2 id="See_also">See also</h2><style data-mw-deduplicate="TemplateStyles:r1093669538" typeof="mw:Extension/templatestyles mw:Transclusion" about="#mwt72" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Portal&quot;,&quot;href&quot;:&quot;./Template:Portal&quot},&quot;params&quot;:{&quot;1&quot;:{&quot;wt&quot;:&quot;Poland&quot},&quot;2&quot;:{&quot;wt&quot;:&quot;Internet&quot}},&quot;i&quot;:0}}]}" id="mwSQ">.mw-parser-output .portalbox{padding:0}.mw-parser-output .portalborder{border:solid #aaa 1px}.mw-parser-output .portalbox.tleft{margin:0.5em 1em 0.5em 0}.mw-parser-output .portalbox.tright{margin:0.5em 0 0.5em 1em}.mw-parser-output .portalbox&gt;ul{display:table;box-sizing:border-box;max-width:175px;font-size:85%;line-height:110%;font-style:italic;font-weight:bold}.mw-parser-output .portalborder&gt;ul{padding:0.1em;background:#f9f9f9}.mw-parser-output .portalbox&gt;ul&gt;li{display:table-row}.mw-parser-output .portalbox&gt;ul&gt;li&gt;span:first-child{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox&gt;ul&gt;li&gt;span:last-child{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}</style><div role="navigation" aria-label="Portals" class="noprint plainlist portalbox portalborder tright" about="#mwt72" id="mwSg"><ul><li><span><span class="mw-image-border noviewer" typeof="mw:File"><span><img alt="Flag of Poland.svg" resource="./File:Flag_of_Poland.svg" src="//upload.wikimedia.org/wikipedia/en/thumb/1/12/Flag_of_Poland.svg/32px-Flag_of_Poland.svg.png" decoding="async" data-file-width="1280" data-file-height="800" data-file-type="drawing" height="20" width="32" srcset="//upload.wikimedia.org/wikipedia/en/thumb/1/12/Flag_of_Poland.svg/48px-Flag_of_Poland.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/1/12/Flag_of_Poland.svg/64px-Flag_of_Poland.svg.png 2x"/></span></span></span><span> <a rel="mw:WikiLink" class="new" data-href="//en.wikipedia.org/wiki/Portal:Poland" title="Portal:Poland">Poland portal</a> </span></li><li><span><span class="noviewer" typeof="mw:File"> <a onclick="showImg(this)" id="Crystal_Clear_app_linneighborhood.svg" class="mw-file-description"><img alt="Crystal Clear app linneighborhood.svg" resource="./File:Crystal_Clear_app_linneighborhood.svg" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Crystal_Clear_app_linneighborhood.svg/28px-Crystal_Clear_app_linneighborhood.svg.png" decoding="async" data-file-width="407" data-file-height="407" data-file-type="drawing" height="28" width="28" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Crystal_Clear_app_linneighborhood.svg/42px-Crystal_Clear_app_linneighborhood.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Crystal_Clear_app_linneighborhood.svg/56px-Crystal_Clear_app_linneighborhood.svg.png 2x"/></a> </span></span><span> <a rel="mw:WikiLink" class="new" data-href="//en.wikipedia.org/wiki/Portal:Internet" title="Portal:Internet">Internet portal</a> </span></li></ul></div><ul id="mwSw"><li id="mwTA"> <a rel="mw:WikiLink" href="./Grono.net" title="Grono.net" id="mwTQ">Grono.net</a> </li><li id="mwTg"> <a rel="mw:WikiLink" href="./Odnoklassniki" title="Odnoklassniki" id="mwTw">Odnoklassniki</a> </li><li id="mwUA"> <a rel="mw:WikiLink" href="./Facebook" title="Facebook" id="mwUQ">Facebook</a> </li></ul></section><section data-mw-section-id="4" id="mwUg"><h2 id="relatedWikiArticles">Related Research Articles</h2><div class="wikiCardWrapper"><div class="wikiMiliCard " onclick="location.href=&quot;./Gadu-Gadu&quot;"><img src="https://upload.wikimedia.org/wikipedia/en/thumb/7/7f/Gadu-gadu.png/320px-Gadu-gadu.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Gadu-Gadu&lt;/span&gt; Instant messaging software"/><p><b>Gadu-Gadu</b> is a Polish instant messaging client using a proprietary protocol. Gadu-Gadu was the most popular IM service in Poland, with over 15 million registered accounts and approximately 6.5 million users online daily. Gadu-Gadu's casual gaming portal had some 500,000 active users at the end of March 2009. Users send up to 300 million messages per day.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Martial_law_in_Poland&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/T-55A_Martial_law_Poland.jpg/320px-T-55A_Martial_law_Poland.jpg" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Martial law in Poland&lt;/span&gt; 1981&#8211;83 period of repression"/><p><b>Martial law in Poland</b> existed between 13 December 1981 and 22 July 1983. The government of the Polish People's Republic drastically restricted everyday life by introducing martial law and a military junta in an attempt to counter political opposition, in particular the Solidarity movement.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./All-Polish_Youth&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Flaga_MW.png/227px-Flaga_MW.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;All-Polish Youth&lt;/span&gt; Political party in Poland"/><p>The <b>All-Polish Youth</b> refers to two inter-linked Polish far-right ultranationalist youth organizations, with a Catholic-nationalist philosophy. Its agenda declares that its aim is "<i>to raise Polish youth in a Catholic and patriotic spirit</i>".</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Dyskobolia_Grodzisk_Wielkopolski&quot;"><img src="https://upload.wikimedia.org/wikipedia/en/1/1c/Dyskobolia_Grodzisk_Logo.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Dyskobolia Grodzisk Wielkopolski&lt;/span&gt; Association football club"/><p><b>Dyskobolia Grodzisk Wielkopolski</b>, previously <b>Groclin Grodzisk Wielkopolski</b>, was a Polish football club based in Grodzisk Wielkopolski, Greater Poland Voivodeship.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Onet.pl&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Onet_pl.png/320px-Onet_pl.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Onet.pl&lt;/span&gt; Polish web portal"/><p><b>Onet.pl</b> is one of the largest Polish web portals. It is owned by the Krak&#243;w-based Grupa Onet.pl S.A. It was founded in 1996 by Optimus company. According to Alexa rankings, as of October 2017, it was the 45th most popular website worldwide and the 3rd most popular site in Poland. As of December 2016, it is the 6th most visited website in Poland, 311th in the UK, and 375th worldwide.</p></div><div class="wikiMiliCard wikiMiliParaCard" onclick="location.href=&quot;./Internet_in_Poland&quot;"><p>The <b>Internet in Poland</b> was used by 90.4% of households in the country and 98.6% business entities in 2020.  In 2021, the percentage of households with internet will increase to 92.4%.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Badoo&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Badoo_logo_%28new%29.png/320px-Badoo_logo_%28new%29.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Badoo&lt;/span&gt; Dating-focused social networking service"/><p><b>Badoo</b> is a dating-focused social network founded by Russian entrepreneur Andrey Andreev in 2006. It is headquartered in Limassol, Cyprus and London, United Kingdom, with offices in Malta, Russia and the United States. It operates in 190 countries and is available in 47 different languages, making it the world's most widely used dating network. The app is available on iOS, Android, and the web. Badoo operates on a freemium model, whereby the core services can be used without payment. 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He became one of the youngest Polish millionaires, after he sold 20% of shares of nasza-klasa.pl to German venture capital fund, <i>European Founders</i> in 2007. In 2008 Estonian fund <i>Forticom</i> bought 70% of shares of nasza-klasa.pl, with estimated worth 175,000,000 zlotys. In 2007 he got the <i>Cz&#322;owiek Roku Polskiego Internetu</i> prize.</p></div><div class="wikiMiliCard wikiMiliParaCard" onclick="location.href=&quot;./Forticom&quot;"><p><b>Forticom</b> is an IT company based in Latvia. It was the owner of online social networks <i>One.lv</i> (Latvian) and <i>One.lt</i> (Lithuanian). 100% of Forticom is owned by Forticom AS. At this moment the company sold <i>One.lt</i> but the second project <i>One.lv</i> was closed in January 2013.</p></div><div class="wikiMiliCard wikiMiliParaCard" onclick="location.href=&quot;./Klaus_Bachmann&quot;"><p><b>Klaus Dieter Bachmann</b>, journalist, writer, historian and political scientist, author of books and writings on German, Austrian and Polish culture, history and politics, as well as on the European Union and German-Polish as well as Polish-Ukrainian relations. In 1988, Bachmann settled in Poland and began to write on a regular basis for various Austrian and German newspapers and weeklies, reporting on the revolutionary and evolutionary political, economic, social and cultural changes in the post-Soviet bloc countries. Since 1989, he worked as the accredited foreign correspondent based in Poland, and also from 1992, in Kyiv, Minsk and Vilnius. During the mid-90s he wrote for a Berlin daily, <i>Der Tagesspiegel</i>, for <i>Die Stuttgarter Zeitung</i>, <i>Die Hannoversche Allgemeine Zeitung</i>, and also for Polish mainstream newspapers and weeklies.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Matthias_Ostrzolek&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Matthias_Ostrzolek_2014.jpg/199px-Matthias_Ostrzolek_2014.jpg" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Matthias Ostrzolek&lt;/span&gt; Polish-German footballer"/><p><b>Matthias Ostrzolek</b> is a German professional footballer who plays as a left-back for Admira Wacker.</p></div><div class="wikiMiliCard wikiMiliParaCard" onclick="location.href=&quot;./Forsal.pl&quot;"><p><i><b>Forsal.pl</b></i> is a Polish language web site covering financial and business news. It has a readership of approximately 500.000 unique visitors per month and has roughly 3 million page views per month. Forsal.pl has been ranked among the 10 most influential business news media outlets in Poland by the Institute of Media Monitoring, both in 2011 and 2012. It was also voted one of the most important investment news sources by members of the Polish Association of Individual Investors in 2012.</p></div><div class="wikiMiliCard wikiMiliParaCard" onclick="location.href=&quot;./Dziennik_Gazeta_Prawna&quot;"><p><i><b>Dziennik Gazeta Prawna</b></i> is a Polish legal and business daily newspaper, headquartered in Warsaw and published from Monday to Friday. The paper focuses on law, taxes and finances. 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It came to power following the 2015 parliamentary election.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Wroclavia&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/2/29/Wroclavia_Shoping_Mall_Wroc%C5%82aw.jpg/320px-Wroclavia_Shoping_Mall_Wroc%C5%82aw.jpg" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Wroclavia&lt;/span&gt;"/><p><b>Wroclavia</b> is a shopping, entertainment, and office center, located in Wroc&#322;aw, Poland, at the Huby housing estate, on former Pond Fields in the immediate vicinity of the Wroc&#322;aw G&#322;&#243;wny railway station, integrated with the <b>Wroc&#322;aw main bus station</b> located at -2 level of the gallery.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Poland_2050&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Polska2050.svg/270px-Polska2050.svg.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Poland 2050&lt;/span&gt; Political party in Poland"/><p><b>Szymon Ho&#322;ownia's Poland 2050</b> is a centrist political party in Poland.</p></div><div class="wikiMiliCard " onclick="location.href=&quot;./Ringier_Axel_Springer_Media_AG&quot;"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Ringier_Axel_Springer_logo.png/320px-Ringier_Axel_Springer_logo.png" alt="&lt;span class=&quot;mw-page-title-main&quot;&gt;Ringier Axel Springer Media AG&lt;/span&gt;"/><p><b>Ringier Axel Springer Media AG</b> is a media company based in Z&#252;rich. It employs approximately 3100 people. The company was founded on 1 July 2010 by Swiss Ringier Holding AG and German Axel Springer SE to merge the activities of the two previous companies in CEE countries. It operates in the media and advertising market</p></div><div class="wikiMiliCard wikiMiliParaCard" onclick="location.href=&quot;./Nasza&quot;"><div><p><b>Nasza</b> may refer to:</p></div></div></div><h2 id="References">References</h2><style data-mw-deduplicate="TemplateStyles:r1011085734" typeof="mw:Extension/templatestyles mw:Transclusion" about="#mwt78" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;reflist&quot;,&quot;href&quot;:&quot;./Template:Reflist&quot},&quot;params&quot;:{&quot;refs&quot;:{&quot;wt&quot;:&quot;&lt;ref name=\&quot;portal\&quot;&gt;{{cite web|author=Jan Samo&#322;yk |url=http://nk.pl/blog/portal/wpis/165 |title=NK gra z WO&#346;P! |publisher=NK.pl |access-date=2011-10-24}}&lt;/ref&gt;&quot}},&quot;i&quot;:0}}]}" id="mwUw">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist   " about="#mwt78" id="mwVA"><div class="mw-references-wrap" typeof="mw:Extension/references" about="#mwt91" data-mw="{&quot;name&quot;:&quot;references&quot;,&quot;attrs&quot;:{&quot;group&quot;:&quot;&quot;,&quot;responsive&quot;:&quot;1&quot;},&quot;body&quot;:{&quot;html&quot;:&quot;\n&lt;sup about=\&quot;#mwt90\&quot; class=\&quot;mw-ref reference\&quot; rel=\&quot;dc:references\&quot; typeof=\&quot;mw:Extension/ref\&quot; data-parsoid='{\&quot;src\&quot;:\&quot;&amp;lt;ref name=\\\&quot;portal\\\&quot;&gt;{{cite web|author=Jan Samo&#322;yk |url=http://nk.pl/blog/portal/wpis/165 |title=NK gra z WO&#346;P! |publisher=NK.pl |access-date=2011-10-24}}&amp;lt;/ref&gt;\&quot;}' data-mw='{\&quot;name\&quot;:\&quot;ref\&quot;,\&quot;attrs\&quot;:{\&quot;name\&quot;:\&quot;portal\&quot;},\&quot;body\&quot;:{\&quot;id\&quot;:\&quot;mw-reference-text-cite_note-portal-5\&quot;}}'&gt;&lt;a href=\&quot;./NK.pl#cite_note-portal-5\&quot; style=\&quot;counter-reset: mw-Ref 5;\&quot; data-parsoid=\&quot;{}\&quot;&gt;&lt;span class=\&quot;mw-reflink-text\&quot; data-parsoid=\&quot;{}\&quot;&gt;[5]&lt;/span&gt;&lt;/a&gt;&lt;/sup&gt;\n&quot;}}" id="mwVQ"><ol class="mw-references references" id="mwVg"><li about="#cite_note-1" id="cite_note-1"> <a href="./NK.pl#cite_ref-1" rel="mw:referencedBy" id="mwVw"><span class="mw-linkback-text" id="mwWA">&#8593; </span></a> <span id="mw-reference-text-cite_note-1" class="mw-reference-text"><style data-mw-deduplicate="TemplateStyles:r1067248974" typeof="mw:Extension/templatestyles mw:Transclusion" about="#mwt12" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;cite web&quot;,&quot;href&quot;:&quot;./Template:Cite_web&quot},&quot;params&quot;:{&quot;last&quot;:{&quot;wt&quot;:&quot;Urszula&quot},&quot;first&quot;:{&quot;wt&quot;:&quot;Jurgiel&quot},&quot;title&quot;:{&quot;wt&quot;:&quot;Social death of social networks&quot},&quot;url&quot;:{&quot;wt&quot;:&quot;http://mastersofmedia.hum.uva.nl/2011/10/02/social-death-of-social-networks/&quot},&quot;access-date&quot;:{&quot;wt&quot;:&quot;4 April 2013&quot}},&quot;i&quot;:0}}]}" id="mwWQ">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free a,.mw-parser-output .citation .cs1-lock-free a{background:linear-gradient(transparent,transparent),url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited a,.mw-parser-output .id-lock-registration a,.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:linear-gradient(transparent,transparent),url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription a,.mw-parser-output .citation .cs1-lock-subscription a{background:linear-gradient(transparent,transparent),url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:linear-gradient(transparent,transparent),url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:#d33}.mw-parser-output .cs1-visible-error{color:#d33}.mw-parser-output .cs1-maint{display:none;color:#3a3;margin-left:0.3em}.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}</style><cite id="CITEREFUrszula" class="citation web cs1" about="#mwt12">Urszula, Jurgiel. <a rel="mw:ExtLink nofollow" href="http://mastersofmedia.hum.uva.nl/2011/10/02/social-death-of-social-networks/" class="external text" id="mwWg">"Social death of social networks"</a> <span class="reference-accessdate" id="mwWw">. 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Jak radzi sobie NK w erze Facebooka?&quot;},&quot;date&quot;:{&quot;wt&quot;:&quot;6 August 2014&quot;},&quot;work&quot;:{&quot;wt&quot;:&quot;se.pl&quot;}},&quot;i&quot;:0}}]}" id="mwlg"/><cite class="citation web cs1" about="#mwt42" id="mwlw"> <a rel="mw:ExtLink nofollow" href="http://www.se.pl/technologie/internet/nasza-klasa-jak-radzi-sobie-nk-w-erze-facebooka_416019.html" class="external text" id="mwmA">"Nasza Klasa. 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Po co?&quot;},&quot;url&quot;:{&quot;wt&quot;:&quot;https://interaktywnie.com/biznes/newsy/portale/grupa-onet-pl-przejmuje-serwis-spolecznosciowy-nk-pl-po-co-249635&quot;},&quot;access-date&quot;:{&quot;wt&quot;:&quot;2022-11-14&quot;},&quot;website&quot;:{&quot;wt&quot;:&quot;interaktywnie.com&quot;},&quot;language&quot;:{&quot;wt&quot;:&quot;en&quot;}},&quot;i&quot;:0}}]}" id="mwnQ"/><cite class="citation web cs1" about="#mwt48" id="mwng"> <a rel="mw:ExtLink nofollow" href="https://interaktywnie.com/biznes/newsy/portale/grupa-onet-pl-przejmuje-serwis-spolecznosciowy-nk-pl-po-co-249635" class="external text" id="mwnw">"Grupa Onet.pl przejmuje serwis spo&#322;eczno&#347;ciowy NK.pl. Po co?"</a>. <i id="mwoA">interaktywnie.com</i><span class="reference-accessdate" id="mwoQ">. Retrieved <span class="nowrap" id="mwog">2022-11-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=interaktywnie.com&amp;rft.atitle=Grupa+Onet.pl+przejmuje+serwis+spo%C5%82eczno%C5%9Bciowy+NK.pl.+Po+co%3F&amp;rft_id=https%3A%2F%2Finteraktywnie.com%2Fbiznes%2Fnewsy%2Fportale%2Fgrupa-onet-pl-przejmuje-serwis-spolecznosciowy-nk-pl-po-co-249635&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988" about="#mwt48" id="mwow"/></span></li><li about="#cite_note-Klasa-9" id="cite_note-Klasa-9"><span rel="mw:referencedBy" id="mwpA"> <a href="./NK.pl#cite_ref-Klasa_9-0" id="mwpQ"><span class="mw-linkback-text" id="mwpg">1 </span></a> <a href="./NK.pl#cite_ref-Klasa_9-1" id="mwpw"><span class="mw-linkback-text" id="mwqA">2 </span></a> </span><span id="mw-reference-text-cite_note-Klasa-9" class="mw-reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1067248974" about="#mwt64" typeof="mw:Extension/templatestyles mw:Transclusion" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;cite web&quot;,&quot;href&quot;:&quot;./Template:Cite_web&quot;},&quot;params&quot;:{&quot;website&quot;:{&quot;wt&quot;:&quot;NK.pl&quot;},&quot;title&quot;:{&quot;wt&quot;:&quot;Polityka Prywatno&#347;ci&amp;nbsp;&#8211; Og&#243;lne Standardy Ochrony&quot;},&quot;url&quot;:{&quot;wt&quot;:&quot;http://nk.pl/nk_policy&quot;},&quot;access-date&quot;:{&quot;wt&quot;:&quot;4 April 2013&quot;}},&quot;i&quot;:0}}]}" id="mwqQ"/><cite class="citation web cs1" about="#mwt64" id="mwqg"> <a rel="mw:ExtLink nofollow" href="http://nk.pl/nk_policy" class="external text" id="mwqw">"Polityka Prywatno&#347;ci<span typeof="mw:Entity" id="mwrA">&#160;</span>&#8211; Og&#243;lne Standardy Ochrony"</a>. <i id="mwrQ">NK.pl</i><span class="reference-accessdate" id="mwrg">. Retrieved <span class="nowrap" id="mwrw">4 April</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=NK.pl&amp;rft.atitle=Polityka+Prywatno%C5%9Bci+%E2%80%93+Og%C3%B3lne+Standardy+Ochrony&amp;rft_id=http%3A%2F%2Fnk.pl%2Fnk_policy&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ANK.pl" class="Z3988" about="#mwt64" id="mwsA"/></span></li></ol></div></div></section><section data-mw-section-id="5" id="mwsQ"><h2 id="External_links">External links</h2><ul id="mwsg"><li id="mwsw"> <a rel="mw:ExtLink nofollow" href="http://nk.pl/" class="external text" id="mwtA">The official site of nk.pl</a> </li><li id="mwtQ"> <a rel="mw:ExtLink nofollow" href="http://developers.nk.pl/wiki/Main_Page" class="external text" id="mwtg">Site for NK Developers</a> </li></ul><div class="navbox-styles nomobile" about="#mwt92"  data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;Social 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style="width:1%"> <a rel="mw:WikiLink" title="List of social networking websites" class="mw-redirect" onclick="openRedirectLink(&quot;List_of_social_networking_websites&quot;)">Personal</a> </th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./23snaps" title="23snaps">23snaps</a> </li><li> <a rel="mw:WikiLink" href="./Amikumu" title="Amikumu">Amikumu</a> </li><li> <a rel="mw:WikiLink" href="./ANobii" title="ANobii">aNobii</a> </li><li> <a rel="mw:WikiLink" href="./Ask.fm" title="Ask.fm">Ask.fm</a> </li><li> <a rel="mw:WikiLink" href="./Badoo" title="Badoo">Badoo</a> </li><li> <a rel="mw:WikiLink" href="./BeReal" title="BeReal">BeReal</a> </li><li> <a rel="mw:WikiLink" href="./Bumble" title="Bumble">Bumble</a> </li><li> <a rel="mw:WikiLink" title="Clash (app)" class="mw-redirect" onclick="openRedirectLink(&quot;Clash_(app)&quot;)">Clash</a> </li><li> <a rel="mw:WikiLink" href="./Clubhouse_(app)" title="Clubhouse (app)">Clubhouse</a> </li><li> <a rel="mw:WikiLink" href="./Cyworld" title="Cyworld">Cyworld</a> </li><li> <a rel="mw:WikiLink" href="./Diaspora_(social_network)" title="Diaspora (social network)">Diaspora</a> </li><li> <a rel="mw:WikiLink" title="Display!" class="mw-redirect" onclick="openRedirectLink(&quot;Display!&quot;)">display!</a> </li><li> <a rel="mw:WikiLink" href="./Douban" title="Douban">Douban</a> </li><li> <a rel="mw:WikiLink" href="./Draugiem.lv" title="Draugiem.lv">Draugiem.lv</a> </li><li> <a rel="mw:WikiLink" href="./Ello_(social_network)" title="Ello (social network)">Ello</a> </li><li> <a rel="mw:WikiLink" href="./Facebook" title="Facebook">Facebook</a> </li><li> <a rel="mw:WikiLink" href="./Foursquare_City_Guide" title="Foursquare City Guide">Foursquare City Guide</a> </li><li> <a rel="mw:WikiLink" href="./Foursquare_Swarm" title="Foursquare Swarm">Foursquare Swarm</a> </li><li> <a rel="mw:WikiLink" href="./Friendica" title="Friendica">Friendica</a> </li><li> <a rel="mw:WikiLink" href="./Gab_(social_network)" title="Gab (social network)">Gab</a> </li><li> <a rel="mw:WikiLink" href="./Gapo" title="Gapo">Gapo</a> </li><li> <a rel="mw:WikiLink" href="./Gettr" title="Gettr">Gettr</a> </li><li> <a rel="mw:WikiLink" href="./GNU_social" title="GNU social">GNU social</a> </li><li> <a rel="mw:WikiLink" href="./Hi5" title="Hi5">Hi5</a> </li><li> <a rel="mw:WikiLink" href="./Idka" title="Idka">Idka</a> </li><li> <a rel="mw:WikiLink" href="./Instagram" title="Instagram">Instagram</a> <ul><li> <a rel="mw:WikiLink" href="./IGTV" title="IGTV">IGTV</a> </li></ul></li><li> <a rel="mw:WikiLink" href="./IRC-Galleria" title="IRC-Galleria">IRC-Galleria</a> </li><li> <a rel="mw:WikiLink" href="./Kumu_(social_network)" title="Kumu (social network)">Kumu</a> </li><li> <a rel="mw:WikiLink" href="./Letterboxd" title="Letterboxd">Letterboxd</a> </li><li> <a rel="mw:WikiLink" href="./LiveJournal" title="LiveJournal">LiveJournal</a> </li><li> <a rel="mw:WikiLink" href="./Likee" title="Likee">Likee</a> </li><li> <a rel="mw:WikiLink" href="./Marco_Polo_(app)" title="Marco Polo (app)">Marco Polo</a> </li><li> <a rel="mw:WikiLink" href="./Mastodon_(software)" title="Mastodon (software)">Mastodon</a> </li><li> <a rel="mw:WikiLink" title="MeetMe" class="mw-redirect" onclick="openRedirectLink(&quot;MeetMe&quot;)">MeetMe</a> </li><li> <a rel="mw:WikiLink" href="./Meetup" title="Meetup">Meetup</a> </li><li> <a rel="mw:WikiLink" href="./MeWe" title="MeWe">MeWe</a> </li><li> <a rel="mw:WikiLink" href="./Miaopai" title="Miaopai">Miaopai</a> </li><li> <a rel="mw:WikiLink" href="./Micro.blog" title="Micro.blog">micro.blog</a> </li><li> <a rel="mw:WikiLink" href="./Minds" title="Minds">Minds</a> </li><li> <a rel="mw:WikiLink" href="./Mixi" title="Mixi">Mixi</a> </li><li> <a rel="mw:WikiLink" href="./Moj_(app)" title="Moj (app)">Moj</a> </li><li> <a rel="mw:WikiLink" title="MX TakaTak" class="mw-redirect" onclick="openRedirectLink(&quot;MX_TakaTak&quot;)">MX TakaTak</a> </li><li> <a rel="mw:WikiLink" href="./Myspace" title="Myspace">Myspace</a> </li><li> <a rel="mw:WikiLink" href="./My_World@Mail.Ru" title="My World@Mail.Ru">My World</a> </li><li> <a rel="mw:WikiLink" href="./Nextdoor" title="Nextdoor">Nextdoor</a> </li><li> <a rel="mw:WikiLink" href="./Odnoklassniki" title="Odnoklassniki">Odnoklassniki</a> (OK.ru)</li><li> <a rel="mw:WikiLink" href="./Parler" title="Parler">Parler</a> </li><li> <a rel="mw:WikiLink" href="./Peach_(social_network)" title="Peach (social network)">Peach</a> </li><li> <a rel="mw:WikiLink" href="./Pinterest" title="Pinterest">Pinterest</a> </li><li> <a rel="mw:WikiLink" href="./Pixnet" title="Pixnet">Pixnet</a> </li><li> <a rel="mw:WikiLink" href="./Plurk" title="Plurk">Plurk</a> </li><li> <a rel="mw:WikiLink" href="./Qzone" title="Qzone">Qzone</a> </li><li> <a rel="mw:WikiLink" href="./Readgeek" title="Readgeek">Readgeek</a> </li><li> <a rel="mw:WikiLink" href="./Renren" title="Renren">Renren</a> </li><li> <a rel="mw:WikiLink" href="./ShareChat" title="ShareChat">ShareChat</a> </li><li> <a rel="mw:WikiLink" href="./Sina_Weibo" title="Sina Weibo">Sina Weibo</a> </li><li> <a rel="mw:WikiLink" title="Slidely" class="mw-redirect" onclick="openRedirectLink(&quot;Slidely&quot;)">Slidely</a> </li><li> <a rel="mw:WikiLink" href="./Snapchat" title="Snapchat">Snapchat</a> </li><li> <a rel="mw:WikiLink" href="./Snow_(app)" title="Snow (app)">SNOW</a> </li><li> <a rel="mw:WikiLink" href="./Spaces_(social_network)" title="Spaces (social network)">Spaces</a> </li><li> <a rel="mw:WikiLink" title="Spotify Greenroom" class="mw-redirect" onclick="openRedirectLink(&quot;Spotify_Greenroom&quot;)">Spotify Greenroom</a> </li><li> <a rel="mw:WikiLink" href="./Tagged_(website)" title="Tagged (website)">Tagged</a> </li><li> <a rel="mw:WikiLink" href="./Taringa!" title="Taringa!">Taringa!</a> </li><li> <a rel="mw:WikiLink" href="./TikTok" title="TikTok">TikTok</a> </li><li> <a rel="mw:WikiLink" href="./Tinder_(app)" title="Tinder (app)">Tinder</a> </li><li> <a rel="mw:WikiLink" href="./Triller_(app)" title="Triller (app)">Triller</a> </li><li> <a rel="mw:WikiLink" href="./Truth_Social" title="Truth Social">Truth Social</a> </li><li> <a rel="mw:WikiLink" href="./Tuenti" title="Tuenti">Tuenti</a> </li><li> <a rel="mw:WikiLink" href="./TV_Time" title="TV Time">TV Time</a> </li><li> <a rel="mw:WikiLink" href="./Tumblr" title="Tumblr">Tumblr</a> </li><li> <a rel="mw:WikiLink" href="./Twitter" title="Twitter">Twitter</a> </li><li> <a rel="mw:WikiLink" href="./Untappd" title="Untappd">Untappd</a> </li><li> <a rel="mw:WikiLink" href="./Vero_(app)" title="Vero (app)">Vero</a> </li><li> <a rel="mw:WikiLink" href="./VK_(service)" title="VK (service)">VK</a> </li><li> <a rel="mw:WikiLink" href="./Whisper_(app)" title="Whisper (app)">Whisper</a> </li><li> <a rel="mw:WikiLink" href="./Xiaohongshu" title="Xiaohongshu">Xiaohongshu</a> 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title="Moodle">Moodle</a> </li><li> <a rel="mw:WikiLink" href="./ResearchGate" title="ResearchGate">ResearchGate</a> </li><li> <a rel="mw:WikiLink" href="./Solaborate" title="Solaborate">Solaborate</a> </li><li> <a rel="mw:WikiLink" href="./Viadeo" title="Viadeo">Viadeo</a> </li><li> <a rel="mw:WikiLink" href="./XING" title="XING">XING</a> </li><li> <a rel="mw:WikiLink" href="./Yammer" title="Yammer">Yammer</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"> <a rel="mw:WikiLink" title="List of defunct social networking websites" class="mw-redirect" onclick="openRedirectLink(&quot;List_of_defunct_social_networking_websites&quot;)">Defunct</a> </th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./App.net" title="App.net">App.net</a> </li><li> <a rel="mw:WikiLink" href="./AsianAve" title="AsianAve">AsianAve</a> </li><li> <a rel="mw:WikiLink" href="./Avatars_United" title="Avatars United">Avatars United</a> </li><li> <a rel="mw:WikiLink" href="./Bebo" title="Bebo">Bebo</a> </li><li> <a rel="mw:WikiLink" href="./Bolt_(website)" title="Bolt (website)">Bolt</a> </li><li> <a rel="mw:WikiLink" href="./Capazoo" title="Capazoo">Capazoo</a> </li><li> <a rel="mw:WikiLink" href="./Cloob" title="Cloob">Cloob</a> </li><li> <a rel="mw:WikiLink" href="./EConozco" title="EConozco">eConozco</a> </li><li> <a rel="mw:WikiLink" href="./Edmodo" title="Edmodo">Edmodo</a> </li><li> <a rel="mw:WikiLink" href="./Emojli" title="Emojli">Emojli</a> </li><li> <a rel="mw:WikiLink" href="./EWorld" title="EWorld">eWorld</a> </li><li> <a rel="mw:WikiLink" href="./Eyegroove" title="Eyegroove">Eyegroove</a> </li><li> <a rel="mw:WikiLink" href="./FitFinder" title="FitFinder">FitFinder</a> </li><li> <a rel="mw:WikiLink" title="Formspring" class="mw-redirect" onclick="openRedirectLink(&quot;Formspring&quot;)">Formspring</a> </li><li> <a rel="mw:WikiLink" href="./FriendFeed" title="FriendFeed">FriendFeed</a> </li><li> <a rel="mw:WikiLink" href="./Friends_Reunited" title="Friends Reunited">Friends Reunited</a> </li><li> <a rel="mw:WikiLink" href="./Friendster" title="Friendster">Friendster</a> </li><li> <a rel="mw:WikiLink" href="./Grono.net" title="Grono.net">Grono.net</a> </li><li> <a rel="mw:WikiLink" href="./Google+" title="Google+">Google+</a> </li><li> <a rel="mw:WikiLink" href="./Google_Buzz" title="Google Buzz">Google Buzz</a> </li><li> <a rel="mw:WikiLink" href="./Hello_(social_network)" title="Hello (social network)">Hello</a> </li><li> <a rel="mw:WikiLink" href="./Heello" title="Heello">Heello</a> </li><li> <a rel="mw:WikiLink" href="./Highlight_(application)" title="Highlight (application)">Highlight</a> </li><li> <a rel="mw:WikiLink" href="./Houseparty_(app)" title="Houseparty (app)">Houseparty</a> </li><li> <a rel="mw:WikiLink" href="./Hyves" title="Hyves">Hyves</a> </li><li> <a rel="mw:WikiLink" href="./IdeaPlane" title="IdeaPlane">IdeaPlane</a> </li><li> <a rel="mw:WikiLink" href="./ITunes_Ping" title="ITunes Ping">iTunes Ping</a> </li><li> <a rel="mw:WikiLink" href="./IWiW" title="IWiW">iWiW</a> </li><li> <a rel="mw:WikiLink" href="./Jaiku" title="Jaiku">Jaiku</a> </li><li> <a rel="mw:WikiLink" href="./Keek" title="Keek">Keek</a> </li><li> <a rel="mw:WikiLink" href="./Lifeknot" title="Lifeknot">Lifeknot</a> </li><li> <a rel="mw:WikiLink" href="./LunarStorm" title="LunarStorm">LunarStorm</a> </li><li> <a rel="mw:WikiLink" href="./Me2day" title="Me2day">Me2day</a> </li><li> <a rel="mw:WikiLink" href="./Meerkat_(app)" title="Meerkat (app)">Meerkat</a> </li><li> <a rel="mw:WikiLink" href="./MixBit" title="MixBit">MixBit</a> </li><li> <a rel="mw:WikiLink" href="./Mobli" title="Mobli">Mobli</a> </li><li> <a rel="mw:WikiLink" href="./Mugshot_(website)" title="Mugshot (website)">Mugshot</a> </li><li> <a rel="mw:WikiLink" href="./Multiply_(website)" title="Multiply (website)">Multiply</a> </li><li> <a rel="mw:WikiLink" href="./Musical.ly" title="Musical.ly">Musical.ly</a> </li><li> <a rel="mw:WikiLink" href="./Natter_Social_Network" title="Natter Social Network">Natter Social Network</a> </li><li> <a rel="mw:WikiLink" href="./Netlog" title="Netlog">Netlog</a> </li><li> <a rel="mw:WikiLink" href="./NK.pl" title="NK.pl">NK.pl</a> </li><li> <a rel="mw:WikiLink" href="./Orkut" title="Orkut">Orkut</a> </li><li> <a rel="mw:WikiLink" href="./Path_(social_network)" title="Path (social network)">Path</a> </li><li> <a rel="mw:WikiLink" href="./Periscope_(service)" title="Periscope (service)">Periscope</a> </li><li> <a rel="mw:WikiLink" href="./Pheed" title="Pheed">Pheed</a> </li><li> <a rel="mw:WikiLink" href="./Piczo" title="Piczo">Piczo</a> </li><li> <a rel="mw:WikiLink" href="./PlanetAll" title="PlanetAll">PlanetAll</a> </li><li> <a rel="mw:WikiLink" href="./Posterous" title="Posterous">Posterous</a> </li><li> <a rel="mw:WikiLink" href="./Pownce" title="Pownce">Pownce</a> </li><li> <a rel="mw:WikiLink" href="./Qaiku" title="Qaiku">Qaiku</a> </li><li> <a rel="mw:WikiLink" title="Sciencescape" class="mw-redirect" onclick="openRedirectLink(&quot;Sciencescape&quot;)">Sciencescape</a> (Meta<sup>&#945;</sup>)</li><li> <a rel="mw:WikiLink" href="./SixDegrees.com" title="SixDegrees.com">SixDegrees.com</a> </li><li> <a rel="mw:WikiLink" href="./So.cl" title="So.cl">So.cl</a> </li><li> <a rel="mw:WikiLink" href="./Spring.me" title="Spring.me">Spring.me</a> </li><li> <a rel="mw:WikiLink" href="./Streetlife_(website)" title="Streetlife (website)">Streetlife</a> </li><li> <a rel="mw:WikiLink" href="./StudiVZ" title="StudiVZ">StudiVZ</a> </li><li> <a rel="mw:WikiLink" href="./Surfbook" title="Surfbook">Surfbook</a> </li><li> <a rel="mw:WikiLink" href="./Tbh_(app)" title="Tbh (app)">tbh</a> </li><li> <a rel="mw:WikiLink" href="./Tea_Party_Community" title="Tea Party Community">Tea Party Community</a> </li><li> <a rel="mw:WikiLink" href="./Third_Voice" title="Third Voice">Third Voice</a> </li><li> <a rel="mw:WikiLink" href="./Tribe.net" title="Tribe.net">tribe.net</a> </li><li> <a rel="mw:WikiLink" href="./Tout_(company)" title="Tout (company)">Tout</a> </li><li> <a rel="mw:WikiLink" title="Ts&#363; (social network)" class="mw-redirect" onclick="openRedirectLink(&quot;Ts&#363;_(social_network)&quot;)">Ts&#363;</a> </li><li> <a rel="mw:WikiLink" href="./Tvtag" title="Tvtag">tvtag</a> </li><li> <a rel="mw:WikiLink" href="./Vine_(service)" title="Vine (service)">Vine</a> </li><li> <a rel="mw:WikiLink" href="./Windows_Live_Spaces" title="Windows Live Spaces">Windows Live Spaces</a> </li><li> <a rel="mw:WikiLink" href="./Wretch_(website)" title="Wretch (website)">Wretch</a> </li><li> <a rel="mw:WikiLink" href="./Xanga" title="Xanga">Xanga</a> </li><li> <a rel="mw:WikiLink" href="./Yahoo!_360&#176;" title="Yahoo! 360&#176;">Yahoo! 360&#176;</a> </li><li> <a rel="mw:WikiLink" href="./Yahoo!_Kickstart" title="Yahoo! Kickstart">Yahoo! Kickstart</a> </li><li> <a rel="mw:WikiLink" href="./Yahoo!_Mash" title="Yahoo! Mash">Yahoo! Mash</a> </li><li> <a rel="mw:WikiLink" href="./Yahoo!_Meme" title="Yahoo! Meme">Yahoo! Meme</a> </li><li> <a rel="mw:WikiLink" href="./Yo_(app)" title="Yo (app)">Yo</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Services</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./Comparison_of_social_networking_software" title="Comparison of social networking software">Software comparison</a> </li><li> <a rel="mw:WikiLink" href="./White-label_product" title="White-label product">White-label</a> <ul><li> <a rel="mw:WikiLink" href="./Ning_(website)" title="Ning (website)">Ning</a> </li><li> <a rel="mw:WikiLink" href="./Wall.fm" title="Wall.fm">Wall.fm</a> </li></ul></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Tools</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./Social_network_analysis_software" title="Social network analysis software">Social network analysis software</a> </li><li> <a rel="mw:WikiLink" title="Diaspora (software)" class="mw-redirect" onclick="openRedirectLink(&quot;Diaspora_(software)&quot;)">Diaspora (software)</a> </li><li> <a rel="mw:WikiLink" href="./Web_2.0_Suicide_Machine" title="Web 2.0 Suicide Machine">Web 2.0 Suicide Machine</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./Attention_inequality" title="Attention inequality">Attention inequality</a> </li><li> <a rel="mw:WikiLink" href="./Cybersectarianism" title="Cybersectarianism">Cybersectarianism</a> </li><li> <a rel="mw:WikiLink" href="./Fediverse" title="Fediverse">Fediverse</a> </li><li> <a rel="mw:WikiLink" href="./List_of_virtual_communities_with_more_than_1_million_users" title="List of virtual communities with more than 1 million users">1+ million users</a> </li><li> <a rel="mw:WikiLink" href="./Online_identity" title="Online identity">Online identity</a> </li><li> <a rel="mw:WikiLink" href="./Small-world_experiment" title="Small-world experiment">Small-world experiment</a> </li><li> <a rel="mw:WikiLink" href="./Small-world_network" title="Small-world network">Small-world network</a> </li><li> <a rel="mw:WikiLink" href="./Social_network" title="Social network">Social network</a> </li><li> <a rel="mw:WikiLink" href="./Thirst_trap" title="Thirst trap">Thirst trap</a> </li><li> <a rel="mw:WikiLink" href="./User_profile" title="User profile">User profile</a> </li><li> <a rel="mw:WikiLink" href="./Virtual_community" title="Virtual community">Virtual community</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./Hospitality_exchange_service" title="Hospitality exchange service">Hospitality exchange service</a> </li><li> <a rel="mw:WikiLink" href="./Mobile_social_network" title="Mobile social network">Mobile</a> </li><li> <a rel="mw:WikiLink" href="./Online_dating_service" title="Online dating service">Online dating service</a> (<a rel="mw:WikiLink" title="Comparison of online dating websites" class="mw-redirect" onclick="openRedirectLink(&quot;Comparison_of_online_dating_websites&quot;)">comparison</a>)</li><li> <a rel="mw:WikiLink" href="./Social_network_advertising" title="Social network advertising">Social network advertising</a> </li><li> <a rel="mw:WikiLink" href="./Social_network_hosting_service" title="Social network hosting service">Social network hosting service</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"> <a rel="mw:WikiLink" href="./User_interface" title="User interface">User interface</a> </th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./Activity_stream" title="Activity stream">Activity stream</a> </li><li> <a rel="mw:WikiLink" href="./Brand_page" title="Brand page">Brand page</a> </li><li> <a rel="mw:WikiLink" href="./Group_(online_social_networking)" title="Group (online social networking)">Groups</a> </li><li> <a rel="mw:WikiLink" href="./Hashtag" title="Hashtag">Hashtag</a> </li><li> <a rel="mw:WikiLink" href="./Like_button" title="Like button">Like button</a> </li><li> <a rel="mw:WikiLink" href="./Online_petition" title="Online petition">Online petitions</a> </li><li> <a rel="mw:WikiLink" title="Open access poll" class="mw-redirect" onclick="openRedirectLink(&quot;Open_access_poll&quot;)">Polling</a> </li><li> <a rel="mw:WikiLink" href="./Reblogging" title="Reblogging">Reblogging</a> </li><li> <a rel="mw:WikiLink" href="./Stories_(social_media)" title="Stories (social media)">Stories</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Implications</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./Issues_relating_to_social_networking_services" title="Issues relating to social networking services">Issues relating to social networking services</a> </li><li> <a rel="mw:WikiLink" title="Privacy issues of social networking sites" class="mw-redirect" onclick="openRedirectLink(&quot;Privacy_issues_of_social_networking_sites&quot;)">Privacy issues</a> </li><li> <a rel="mw:WikiLink" href="./Use_of_social_network_websites_in_investigations" title="Use of social network websites in investigations">Use in investigations</a> </li><li> <a rel="mw:WikiLink" href="./Gender_differences_in_social_network_service_use" title="Gender differences in social network service use">User gender difference</a> </li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Protocols</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li> <a rel="mw:WikiLink" href="./ActivityPub" title="ActivityPub">ActivityPub</a> </li><li> <a rel="mw:WikiLink" href="./Distributed_Social_Networking_Protocol" title="Distributed Social Networking Protocol">Distributed Social Networking Protocol</a> (defunct)</li><li> <a rel="mw:WikiLink" href="./Micropub_(protocol)" title="Micropub (protocol)">Micropub</a> </li><li> <a rel="mw:WikiLink" href="./OpenSocial" title="OpenSocial">OpenSocial</a> (defunct)</li><li> <a rel="mw:WikiLink" href="./OStatus" title="OStatus">OStatus</a> </li><li> <a rel="mw:WikiLink" href="./Pump.io" title="Pump.io">Pump.io</a> </li><li> <a rel="mw:WikiLink" href="./XMPP" title="XMPP">XMPP</a> </li></ul></div></td></tr></tbody></table></div><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Online_companies_of_Poland" id="mwuQ"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Polish_social_networking_websites" id="mwug"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Internet_properties_established_in_2006" id="mwuw"/><link rel="mw:PageProp/Category" target="_blank" href="//en.wikipedia.org/wiki/Category:Internet_properties_disestablished_in_2021" id="mwvA"/></section><div class="ref-link">This page is based on this <a target="_blank" href="//en.wikipedia.org/wiki/NK.pl">Wikipedia article</a> <br>Text is available under the <a href="//creativecommons.org/licenses/by-sa/4.0/" target="_blank">CC BY-SA 4.0</a> license; additional terms may apply.<br>Images, videos and audio are available under their 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