The biggest wiki of them all

Wikipedia, the web-based encyclopedia, is probably the most well-known wiki in existence today. Wikis are websites that allow any user to add content (much like web-based forums), but additionally allow the content that has been added to be edited by any other user. Wiki’s are based on three main principles: ease of use (users can post without knowing html), wide-open read/write access and their emergent structure (the navigation structures that users invent). This means that all the content on wikipedia.org has been created/updated by users and is legally free (published under the ‘copyleft’ GNU Free Documentation License). Because of the fact that any of Wikipedia’s users can add/edit content, no article can ever be finished. One of the key problems with Wikipedia, according to users, is the difference in the quality of the entries. The success of Wikipedia, however, is demonstrated by the recent announcement that they now host over a million articles.