Revelation about Wikis

When I was doing my reading for EDTC 6149 last night, I learned that I didn't really know the real purpose for a wiki (even though I've been using them for my classes). I have used wikis to relay information to students and parents and I've used the discussion forum; however, I haven't used them as a collaborative tool in the classroom. I have used them for this purpose in other grad classes, but I never thought to use them in that manner in the classroom. For some reason, it never dawned on me to assign a group project and have the students work through the assignment on a collaborative wiki. I've done something similar with Google Docs, and maybe that's why I never thought to use the wiki. However, it seems that students can be more creative with collaborative wikis.