<<The Web site, which is owned by the News Corporation, said that within 30 days it planned to deploy the technology, which will seek to identify known sex offenders not just by their names, but also by date of birth, height, weight and ZIP code.

If the automated system finds a potential match between a MySpace user and a registered sex offender, employees will try to verify the match or determine if it is a false positive. Users who are registered sex offenders, MySpace said, will be denied access to the site and, depending in the circumstances, be turned over to law enforcement. >>

http://www.nytimes.com/2006/12/06/technology/06myspace.html?ex=1323061200&en=c5b4c3a5d6de9508&ei=5088&partner=rssnyt&emc=rss

But what if you enter fake or incomplete information?