Does FOAF provide sufficient ontological support for WebID & WWW Identity AUTH REQ's?

http://en.wikipedia.org/wiki/Personal_identity
http://en.wikipedia.org/wiki/Law_of_identity
http://en.wikipedia.org/wiki/Identity_(philosophy)

My rational around continuing to debate this; is that the whilst identity
systems are fragmented on the web; they are fragmented by organisational
influences, with increasingly lesser support for personal ones.

My recent drafts about it: linked, http://webarts.mediaprophet.net/?p=72
(and http://webarts.mediaprophet.net/?p=68 )