[cmars232]

I don't think it's paranoia at all. It doesn't even take bad motives, just a lapse of judgment or faulty assumption to ruin privacy -- like Google Buzz integration into GMail.

I think the solution requires more than feel-good policy statements and trust building. And God forbid someone mention legislation.

Ultimately the users need full localized control (hosting, or decrypting) over their private identities, content and social connections. Private groups should be darknets. And it should be as easy as automatic to set up and use. Zooko's Triangle be damned.