Information is person-al
Perhaps inspired by Google circles?
I like the notion of arranging projects/interests/topics by people you're engaged with/woould like to be engaged with/would liek to learn from.
Information is personal, in people, not in books. Books are the factory, instantiating knowledge in people.
So for each:
- what i want to learn from them
- what i can share
- how closely i want to be engaged, when
It's not only about the social, in fact, the point of the group is pursuing the project, but the social helps to keep me engaged in the project as well.