According to Wikipedia, the world largest wiki site:
A Wiki ([ˈwiː.kiː] <wee-kee> or [ˈwɪ.kiː] <wick-ey>) is a type of website that allows users to add, remove, or otherwise edit and change most content very quickly and easily. This ease of interaction and operation makes a wiki an effective tool for collaborative authoring.
A wiki 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 sometimes be misleading, as users may accidentally or intentionally add incorrect information to the wiki.
A wiki enables documents to be written collectively in a 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.
And that is it! As a part of Wikidot.com network this Site is a customizable piece of the Internet where Users can edit content, upload files, communicate and collaborate.