The loss of control you fear is already in the past.

[C]ollaborative production is simple: no one person can take credit for what gets created, and the project could not come into being without the participation of many.

Anybody who predicts the death of cities has already met his spouse.

Think about spam filters; if email didnt come from someone that someone you know knows, thats an important signal, and one we could embed in the environment; we just dont. I just want the world to be filtered through my social graph.

For most of modern life, our strong talents and desires for group effort have been filtered through relatively rigid institutional structures because of the complexity of managing groups. We haven't had all the groups we've wanted, we've simply had the groups we could afford. The old limits of what unmanaged and unpaid groups can do are no longer in operation.

Wikipedia [...] is the product not of collectivism but of unending argumentation.

Collaboration is not an absolute good.