I have a FOAF RDF file. You can view it using CORK. I'm moving to Bohmian.org. I've started micro-blogging via Jabber.
From time-to-time I get talked into signing up for social networking sites. I can't be bothered to fill out the same information time after time, so I end up linking to this page.
I have pretty much whatever information you could want, including the general stuff in the FOAF RDF file above, which is a standard XML format (if you care, read the schema information in the file). Ideally, all of these sites would recognize this format and allow linking to it. I consider this The Next Best Thing.
You can use either your favorite RDF viewer, or something specifically designed for FOAF files (the FOAF Explorer being the cannonical web-based viewer, I suppose). I suggest just using CORK (linked above) which also generated the file and displays everything all nicely like, similar to what you would see at one of the social networking sites themselves.
Feel free to play around with CORK and generate your own FOAF file, and link to it in your web page. FOAF is designed to do all the things that social networking sites do, but without a single point of failure or control.
Related link about privacy (control) and these sites. "Autstic Social Software" an essay about social sites and how they encourage symptoms of mental illness in otherwise healthy people.
--
Future looks spotty. You will spill soup in late evening.