This is really a very exciting experience for students. Wikiville is still in its infancy. The stated purpose is:
21st Century students building a world-story of life in their home towns.
I think this is an exciting opportunity for students. If you are a wiki teacher, join wikiville. I did the setup tonight and plan to have some of my students work on it tomorrow during time they may have near the end of the class. (I always have extra wiki projects going for those who finish work and labs early.)