More about wikis!
So wikis really are the next big thing. ReadWriteWeb had a post yesterday on them, which turns out to be a pretty good analysis of the phenomenon, and also gives a fairly complete overview of the different providers and of all the use you can make of a wiki.
Coincidentally, I also found this January 2007 NPR program with Don Tapscott, co-author of Wikinomics: How Mass Collaboration Changes Everything.