Wiki sims

I know the technology and capability isn't there yet. But... wiki's are all the rage on the internet.. the idea of wiki sims.. set up to a theme, where anyone can come and edit and contribute to the content of that theme. Could make the most use of many different people's creativity. Lots of potential problems though, such as griefers etc.. and would have to have moderator system setup and rollback features. Probably isn't too plausible considering the problems associated, at least at this time...but just an idea that came to me.