This aligns pretty well with my experience of Learning and Networking with a Blog. It appears to be heading in a good direction where you can have a distributed understanding of the social graph. While that sounds somewhat like OpenSocial, I'm still not sure that I believe that OpenSocial gets me what I really want/need - interacting with the social graph across sites.
DiSo (dee • zoh) is an umbrella project for a group of open source implementations of these distributed social networking concepts. or as Chris puts it: “to build a social network with its skin inside out”.
Our first target is Wordpress, bootstrapping on existing work and building out from there.
This is also a good direction in that it starts with something that you own as an individual - your blog (as opposed to starting within the walls of Facebook).
Of course, this is early, but the general trend of seeing distributed, open social network solutions is encouraging.