WIkis in the Classroom - Collaborative FAQ

I am slowly warming up to the idea of using a class wiki after seeing a few things I hadn't thought of that might really work in a high school classroom or campus. One wiki I found actually has a couple of things that I liked. One is using a wiki as a collaborative FAQ section that the students can put together for new students in a school or class. This wiki shows how an english class made a student created FAQ section, although the link to that section does not work at the time that I'm writing this. I am still looking for a classroom that is trying this and for now, this will have to do. Not a bad idea, though.