I have attempted to create my wiki space three times now. Third try is the charm (I hope!)
I think the wiki space could be used for kids to create stories and have their peers edit and revise their work. It would also be a good way for a class to write a collaborative piece for a specific subject. This could be done as an outside class assignment for those who have computers at home or as an in school project. If I did this in school with the kids, I would have the kids assigned specific times to get on the computer and add to the class story.