I think we are missing a larger question: how can we use existing web protocols and technologies to allow link able and discoverable social interactions?
Wordpress does a pretty good job of this. Open source web apps is probably the next revolution for social. Diaspora had the right idea but execution was slow, insecure, and Facebook derivative.
I agree. For this to be widely adopted the discoverable piece is most important. Open source web apps are a great start, especially products like Wordpress because they are accessible to anyone.