Wikis in Plain English

A wiki is a website that multiple users can edit. Users often have a common vocabulary and consider themselves a "Wiki" community. One person starts the wiki. Next, a new person read the wiki and decides to edit/add to or in some way modify the wiki. This can occur numerous times, until finally, the "wiki" community is content with the content, or the person who began the wiki changes who can modify the wiki.

Side Note: Wiki-wiki is the Hawaiian word for quick. (http://www.answers.com/topic/wiki?cat=technology)

If you are like me, visuals are always helpful, which is why I posted a video that shows everything I just wrote :)