This video was posted over at Kairos, but I think I've seen it before. It does a great job of explaining wikis to beginners:
My name is Jim Brown. I'm a Ph.D. Candidate in English at the University of Texas, specializing in Digital Literacies and Literatures. I maintain four blogs, and you can see all of my blog writings by viewing this RSS feed. The name of this blog is explained in this post from January 2008.

This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 2.5 License.
Recent comments
3 days 7 hours ago
3 days 15 hours ago
3 days 16 hours ago
2 weeks 5 days ago
2 weeks 6 days ago
8 weeks 1 day ago
10 weeks 4 days ago
12 weeks 1 day ago
14 weeks 6 days ago
15 weeks 5 days ago