Social Search from Google

I joined the Google Social Search experiment. When you do, any time you do a search in Google it adds information and results from your social network. It gets network information from public information about your network found in Twitter, Friendfeed and your GMail chat list. Not from Facebook, since friends there are not public. Although it uses this information it does not display that network in any way. I have tried it a few times, but nothing interesting yet. Nice idea, with the usual privacy nervousness. A video overview.