This is a pretty thoughful consideration of the different ingredients that combine to make social software work.
For me it's another summation of the power of the Wiki. I wonder what would happen if some of the sites I have worked on this year were handed over, even partially, to the communities / audiences, they are built to serve.
What would they look like? What kind of direction would they take? What kind of discussions would take place there?
It would take a lot of courage to hand even one of those websites over to their audience. I'm so curious though, what kinda' monster would it become.