I’m quickly running out of steam for the day, but I wanted to try adding a FOAF resource to my homepage. “Friend of a Friend” (FOAF) is an ontology for social networks. It describes a person and lists relationships to people they know. It appears to have an appropriate atomicity for a large scale, although I imagine some people might have a fairly large list of referrals and “walking” the links between individuals could be resource intensive.
Anyway, it looks cool, and I’ll probably have more to say on this as I continue my long tumble down the semantic rabbit-hole.