A wiki is a page or collection of Web pages designed to enable anyone who accesses it to contribute or modify content, using a simplified markup language.Wikis are often used to create collaborative websites and to power community websites. The first ever wiki was the software WikiWikiWeb, which was developed in 1994 by the American computer programmer Ward Cunningham. He has said that he originally intended to call it QuickWeb, but instead used the Hawaiian word ‘wiki’ which means fast, after hearing of a shuttle bus in Honolulu called the ‘Wiki Wiki Shuttle’. Cunningham had developed on the ideas of Vannivar Bush in allowing people to "comment and change other people's text". A wiki invites all users to edit any page or to create new pages within the wiki Web site, and the most famous wiki around on the web today is of course Wikipedia, an online encyclopedia which can be edited by anyone, which most people use on a day to day basis. However, it is the fact that it is open to be edited by anyone that provides one of its biggest risks - the danger of vandalism and of people putting up false and incorrect information is a huge one, and this is the reason why a lot of these sites are not trusted as source of information, labelled as unreliable. This is unfortunate, as the entire concept of the wikis is for people to share and edit information on the web, and irresponsible usage of wikis is bad.