[seankean]

been thinking about the exact same thing. i actually ran a private wiki that worked this way with great success on the content side --- less people had the ability to hack on the code of how the site functioned, but it was available and open to this group.

i'm now looking to do this on a larger and more public scale --- i'd love to chat with you more about what you are trying to do and we could talk about possible best practices - perhaps this is the next evolution of the internet?