I met Chris Messina once back a few years ago when he was pushing Flock.
Now I see him doing this (link below), while mixing in the social media relationship space.
This DiSo will be interesting.
DiSo: Distributed Social Networking apps
DiSo (dee • zoh) is a new umbrella project for various open source social networking components that we’re working on. In the beginning, we’re largely targetting Wordpress, building on the work Will Norris‘ has done with his excellent WP-OpenID plugin.