I have used a Wiki in a couple of my classes, and have figured out how to use them but this video was helpful to really understand the wikis. It all makes more sense to me now.
PBwikiTips offers great tips for setting up and using a wiki. I have been thinking about trying to use a wiki in my classroom next year if I decide to use it I will definitely refer back to this site. I think it would be very productive to have a wiki for a library. I would have a page of student book reviews, one for teacher book reviews, a page for new books, things that are happening in the library, web sites that would be helpful and/or just for fun. The list is endless!