Here are two articles about the use of wikis in education:
I had been using blogs for several years until last year when i went a bit wiki crazy and everything was all about the wiki. I am quite liking nings too but haven’t ever used those yet with a group. I need to give the wiki more robust experimentation as I don’t think I am getting the most of them yet. So semester 2 students, you’d best learn all you can about wikis in advance because we’ll be using them!