Read in the comments of Marc Canter’s blog, by Julian Bond (a name I remember from the early RSS days) :
I’ve been banging on about this for a while now. I don’t want a great “MyPortal” page. I want a great “AboutMe 2.0″ page that is indexed by Google. It should have links to everything I belong to and ideally links to everything I post on the net, anywhere.
I want that too! First tried with the quiest idea from Martin Lessard, then I tought maybe FOAF but then, that’s only the output format, I want services to expose this data in private and public manner (a bit like Google Calender feeds) and mashup myself… Identity needs to be portable, it seems to me the first step is at least aggregating info about myself from sources I am aware of.
Seb Provencher's Blog 