Wikipedia:What is a wiki
A wiki is a collection of interlinked web pages, each of which can be visited and edited by anyone (It's true, I just did it). You can even edit this page: just click "Edit text of this page" above or below.
So it's a collaborative website, constantly expanding as new people add pages about their interests, comment on old pages, et cetera. So, join in and have funz! :)
Perhaps you would like to know the answers to the following questions.
- What is a Wiki for?
- Why on Earth would I want to contribute to a wiki?
- Who is responsible for these pages?
- How does one edit a page?
- Just why is Wikipedia so great, anyway?
See also WikiWiki and Wikipedia.