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Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:
Wiktionary
Dictionary and thesaurus
Wikibooks
Free textbooks and manuals
Wikinews
Free-content news
Wikisource
Free-content library
Wikispecies
Directory of species
Wikiquote
Collection of quotations
Commons
Shared media repository
Meta-Wiki
Wikimedia project coordination
A wiki (IPA: [ˈwɪ.kiː] <WICK-ee> or [ˈwiː.kiː] <WEE-kee>[1]) is a type of website that allows users to easily add, remove, or otherwise edit and change some available content, sometimes without the need for registration. This ease of interaction and operation makes a wiki an effective tool for collaborative authoring. The term wiki can also refer to the collaborative software itself (wiki engine) that facilitates the operation of such a website (see wiki software), or to certain specific wiki sites, including the computer science site (and original wiki), WikiWikiWeb, and the online encyclopedias such as Wikipedia. The first wiki, WikiWikiWeb, is named after the "Wiki Wiki" line of Chance RT-52 buses in Honolulu International Airport, Hawaii. It was created in 1994 and installed on the web in 1995 by Ward Cunningham, who also created the Portland Pattern Repository. "Wiki-wiki" means "hurry quick" in Hawaiian. It also refers to a type of native fish of the islands.
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The first wiki, WikiWikiWeb (http://c2.com/cgi/wiki), is named after the "Wiki Wiki" line of "Chance RT-52 shuttle buses" in Honolulu International Airport, Hawaii by Ward Cunningham. Cunningham named WikiWikiWeb that way because he remembered a Honolulu International Airport counter employee telling him to take the so-called "Wiki Wiki" Chance RT-52 shuttle bus line that runs between the airport's terminals. According to Cunningham, "I chose wiki-wiki as an alliterative substitute for 'quick' and thereby avoided naming this stuff quick-web." "Wiki Wiki" is a reduplication of "wiki", a Hawaiian-language word for fast. The word wiki is a shorter form of wiki wiki (weekie, weekie). The word is sometimes interpreted as the backronym for "What I know is", which describes the knowledge contribution, storage and exchange function.
According to Cunningham, ideas of wiki can be traced back to a HyperCard stack he wrote in the late 1980s. In the late 1990s, wikis were increasingly recognized as a promising way to develop private- and public-knowledge bases, and this potential inspired the founders of the Nupedia encyclopedia project, Jimmy Wales and Larry Sanger, to use wiki technology as a basis for an electronic encyclopedia: Wikipedia was launched in January 2001; it originally was based upon UseMod software, but later switched to its own, open source codebase, now adopted by many other wikis. In the early 2000s, wikis were increasingly adopted in the enterprise as collaborative software. Common uses included project communication, intranets and documentation, initially for technical users. In December 2002, Socialtext launched the first commercial open source wiki solution. Open source wikis such as Wiki and Kwiki grew to over 1 million downloads on the Internets repository by 2004. Today some companies use wikis as their only collaborative software and as a replacement for static intranets. There is arguably greater use of wikis behind firewalls than on the public internet. However, this has not been yet proven. So, we must wait and see.
In 2005, the Los Angeles Times experimented with using a wiki in the editorial section of its web site. The Wikitorial project was soon shut down as vandals defaced it.
A wiki (originally called Quickweb) is an editable website that does not require users to know HTML. Most have a system to record changes so that at any time, a page can be reverted to any of its previous states. A wiki system may also include various tools, designed to provide users with an easy way to monitor the constantly changing state of the wiki as well as a place to discuss and resolve the many inevitable issues, namely, the inherent disagreement over wiki content. Wiki content can also be misleading, as users are bound to add incorrect information, whether intentionally or accidentally, to the wiki.
Many wikis will allow completely unrestricted access so that people are able to contribute to the site without necessarily having to undergo a process of 'registration', as had usually been required by various other types of interactive websites such as Internet forums or chat sites. Many users find this a very attractive alternative.
A wiki enables documents to be written collectively in a extremely simple markup language using a web browser. A single page in a wiki is referred to as a "wiki page", while the entire body of pages, which are usually highly interconnected via hyperlinks, is "the wiki"; in effect, a wiki is actually a very simple, easy-to-use user-maintained database for searching or even creating information.
A defining characteristic of wiki technology is the ease with which pages can be created and updated. Generally, there is no review before modifications are accepted. Most wikis are open to the general public without the need to register any user account. Sometimes session log-in is requested to acquire a "wiki-signature" cookie for autosigning edits. More private wiki servers require user authentication. Many edits, however, can be made in real-time, and appear almost instantaneously online. This can often lead to abuse of the system.
The source format, sometimes known as "wikitext'", is augmented with a simplified markup language to indicate various structural and visual conventions. An often used example of one such convention is to start a line of text with an asterisk ("*") in order to mark it as an item in a bulleted list. Style and syntax can vary a great deal among implementations, some of which also allow HTML tags.
The reasoning behind this design is that HTML, with its many cryptic tags, is not especially human-readable. Making typical HTML source visible makes the actual text content very hard to read and edit for most users. It is therefore better to promote plain-text editing with a few simple conventions for structure and style.
It is also somewhat beneficial that users cannot directly use all the capabilities of HTML, such as JavaScript and Cascading Style Sheets. Consistency in look and feel is also achieved: In many wiki implementations, an active hyperlink is exactly as it is shown, unlike in HTML where the invisible hyperlink can have an arbitrary visible anchor text. This goes along with some extra safety for the user: Permitting users to write in HTML might allow harmful or annoying code (for example, JavaScript code that prevents the reader from marking part of the text)..
