An InformationWeek article describes Spock.com (currently in beta testing), which allows users to search for profiles compiled out of public information, vote on how accurate the information is, and manage the accuracy of their own profiles. The site is also running a contest (the 'Spock Challenge') to find solutions to one of its major problems, teaching a search algorithm how to correctly tag new information when people share the same name.
The site is currently by invite only, so while I'm waiting for mine, let me just say this: the creators claim that they named the site Spock for its consumer recognizability factor, and that it stands for Single Point of Contact and Knowledge. To which I say: Yeah, right. As a long-time Star Trek enthusiast, I'm comfortable admitting that I've had a crush on Mr. Spock since high school, and I find it hard to believe that the 'patron saint of computer science' had nothing to do with the naming of the company.
Will report back on Spock's search capabilities soon. In the meantime, here's my favorite sentence in the IW article:
"In the absence of privacy, control is the next best thing, and Spock stands out for giving its users a least a little say over how they and others get represented online."