What is a Wiki?
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A wiki (pronounced "wicky" or "weeky" or "viki") is a website (or other hypertext document collection) that allows multiple users to add content, while keeping track of the different contributions.
In short, a Wiki is one of the most powerful tools for web-based collaborative editing and a prominent example of emerging social software.
A WikiEngine is the software used to create and run such websites. For instance, this wiki runs on the WikkaWiki engine.
More information on Wikis is available on: Wikipedia
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