qdos, a first attempt ... (Score 1)

An example semantic web site which does attempt to combine your various social online identifies is http://qdos.com. Qdos gives each person a rank score, based on your online persona, i.e. the higher your social activity the higher your Qdos, you can also log in using OpenID, and you can get all of your data back in a triple notation. You can claim your name, and add your various sites to the profile, and raise your ranking, if you are that way inclined:

Perez Hilton (what a waste of space) in html:
http://qdos.com/celeb/5030c86ab21d08595fcd9a93f4480d45/html
Perez Hilton in triples:
http://qdos.com/celeb/5030c86ab21d08595fcd9a93f4480d45/turtle
CmdrTaco in html:
http://qdos.com/celeb/4e24374b2e9d0209221f2a6a0fc6a100/html
CmdrTaco in turtle:
http://qdos.com/celeb/4e24374b2e9d0209221f2a6a0fc6a100/turtle