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A wiki (pronounced "wicky", "weekee" or "veekee") is a website that allows a user to add content, as on an Internet forum, but also allows that content to be edited by anybody. Wiki wiki comes from the Hawaiian term for "quick" or "super-fast." Since the page history is stored, the pages can be reverted back in case of vandalism. Since its first introduction on March 25, 1995, as Portland Pattern Repository by Ward Cunningham, Wiki Wiki Webs became quickly popular, thanks to the revolutionary concept of users editing any page in the wiki. Since the page history is stored, the pages can be reverted back in case of vandalism. The phenomenal success of wikis is exemplified by  ==Other Wiki projects==* [http://www.wikimd.org WikiMD], a free medical encyclopedia and Gray's Anatomy. (our sister project)* [http://www.residentscafe.com/wiki Residentscafe] medical education and US residency wiki. (our sister project)* [http://en.wikipedia.org/wiki/Main_Page wikipedia], started in January 2001 working on over 433508 articles as of December, 2004a large general encyclopedia.