I have found that one of the most difficult aspects of using some of these new tools in an academic setting is the fact that there is still much that has to be done about explaining, contextualizing, demystifying and understanding what they can do...and perhaps more importantly, what they will not do.

On the EDUCAUSE website there is this wonderful pdf that shows how the University of Southern California is explaining and using wikis.

(Note: the EDUCAUSE site, in its entirety, is a bear. You need to "mine" the portions of the site that deal with teaching and learning)

Here is a starting point: Link to teaching and learning resources on EDUCAUSE website

Here is the one that I thought would be most useful for the Education Bridges' community: Jude Higdon of USC's "The Pedagogies of Wikis"