Agree with walkman... Can you say "COPPA".. what a joke that is.
There was excellent piece on the PBS news show called "Growing up Online" . One of the persons interviewed stated that nearly every documented account of any kid meeting up with a stranger they met online was at the kids behest. They weren't tricked or manipulated into anything but instead were actively pursuing it.
Truthfully I think the situation is overblown. Doesn't matter what safeguards facebook or any other online community puts in place if the parents aren't involved.
Online version of that show can be seen here: [www-c.pbs.org...]