Wikis in Education

I'm not very far into the Wiki topic, but I have already seen what is somewhat paramount in Wiki use: leadership. It seems that Wikis are an amazing collaborative tool, but my students will most definitely need a strong leadership component to a Wiki. I'm seeing that just with us College students, the Wiki is getting chaotic. I think that perhaps an outline set up by a leader or teacher would be best for Wiki set-ups. Perhaps I will see a difference when actually doing the Wiki project, but for now I feel unsure and disorganized. This does teach a strong lesson about creating a Wiki for my students.