Google Search is a search engine provided and operated by Google. Handling more than 3.5 billion searches per day, it has a 92% share of the global search engine market. It is the most-visited website in the world. Additionally, it is the most searched and used search engine in the entire world.
PHP is a general-purpose scripting language geared towards web development. It was originally created by Danish-Canadian programmer Rasmus Lerdorf in 1993 and released in 1995. The PHP reference implementation is now produced by the PHP Group. PHP was originally an abbreviation of Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor.
A wiki is an online hypertext publication collaboratively edited and managed by its own audience, using a web browser. A typical wiki contains multiple pages for the subjects or scope of the project, and could be either open to the public or limited to use within an organization for maintaining its internal knowledge base.
Spamdexing is the deliberate manipulation of search engine indexes. It involves a number of methods, such as link building and repeating unrelated phrases, to manipulate the relevance or prominence of resources indexed in a manner inconsistent with the purpose of the indexing system.
Wikisource is an online digital library of free-content textual sources on a wiki, operated by the Wikimedia Foundation. Wikisource is the name of the project as a whole and the name for each instance of that project ; multiple Wikisources make up the overall project of Wikisource. The project's aim is to host all forms of free text, in many languages, and translations. Originally conceived as an archive to store useful or important historical texts, it has expanded to become a general-content library. The project officially began on November 24, 2003 under the name Project Sourceberg, a play on the famous Project Gutenberg. The name Wikisource was adopted later that year and it received its own domain name.
Google News is a news aggregator service developed by Google. It presents a continuous flow of links to articles organized from thousands of publishers and magazines. Google News is available as an app on Android, iOS, and the Web.
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents.
Google Reader was an RSS/Atom feed aggregator operated by Google. It was created in early 2005 by Google engineer Chris Wetherell and launched on October 7, 2005, through Google Labs. Google Reader grew in popularity to support a number of programs which used it as a platform for serving news and information to users. Google closed Google Reader on July 1, 2013, citing declining use.
nofollow is a setting on a web page hyperlink that directs search engines not to use the link for page ranking calculations. It is specified in the page as a type of link relation; that is: <a rel="nofollow" ...>. Because search engines often calculate a site's importance according to the number of hyperlinks from other sites, the nofollow setting allows website authors to indicate that the presence of a link is not an endorsement of the target site's importance.
Google Personalized Search is a personalized search feature of Google Search, introduced in 2004. All searches on Google Search are associated with a browser cookie record. When a user performs a search, the search results are not only based on the relevance of each web page to the search term, but also on which websites the user visited through previous search results. This provides a more personalized experience that can increase the relevance of the search results for the particular user. Such filtering may also have side effects, such as the creation of a filter bubble.
Rfam is a database containing information about non-coding RNA (ncRNA) families and other structured RNA elements. It is an annotated, open access database originally developed at the Wellcome Trust Sanger Institute in collaboration with Janelia Farm, and currently hosted at the European Bioinformatics Institute. Rfam is designed to be similar to the Pfam database for annotating protein families.
Wikia Search was a short-lived free and open-source web search engine launched by Wikia, a for-profit wiki-hosting company founded by Jimmy Wales and Angela Beesley. Wikia Search followed other experiments by Wikia into search engine technology and officially launched as a "public alpha" on January 7, 2008. The roll-out version of the search interface was widely criticized by reviewers in mainstream media.
The history of wikis began in 1994, when Ward Cunningham gave the name "WikiWikiWeb" to the knowledge base, which ran on his company's website at c2.com, and the wiki software that powered it. The wiki went public in March 1995, the date used in anniversary celebrations of the wiki's origins. c2.com is thus the first true wiki, or a website with pages and links that can be easily edited via the browser, with a reliable version history for each page. He chose "WikiWikiWeb" as the name based on his memories of the "Wiki Wiki Shuttle" at Honolulu International Airport, and because "wiki" is the Hawaiian word for "quick".
YouTube is an American online video-sharing platform headquartered in San Bruno, California, founded by three former PayPal employees—Chad Hurley, Steve Chen, and Jawed Karim– in February 2005. Google bought the site in November 2006 for US$1.65 billion, since which it operates as one of Google's subsidiaries.
A.nnotate is a web service for storing and annotating documents. Documents are either uploaded by the user or fetched from a web address supplied by the user. Uploads are accepted as PDF, Microsoft Word, office formats supported by OpenOffice and common image formats. When a URL of a web page is entered, the service makes a local copy of the HTML and stylesheet. The service offers a browser bookmarklet to facilitate making snapshots of web pages.
Google Sidewiki was a web annotation tool from Google, launched in September 2009 and discontinued in December 2011. Sidewiki was a browser extension that allowed anyone logged into a Google Account to make and view comments about a given website in a sidebar. Despite the name, the tool was not a collaborative wiki, though the comments were editable by the author.
Google's changes to its privacy policy on March 16, 2012 enabled the company to share data across a wide variety of services. These embedded services include millions of third-party websites that use AdSense and Analytics. The policy was widely criticized for creating an environment that discourages Internet-innovation by making Internet users more fearful and wary of what they do online.
Genius is an American digital media company founded on August 27, 2009, by Tom Lehman, Ilan Zechory, and Mahbod Moghadam. Its website serves as an online music encyclopedia allowing users to provide annotations and interpretation to song lyrics, news stories, sources, poetry, and documents.
