And now that I've read the report that you linked to in your post I remember a news report (can't remember the source, or even if it was online or on a TV news report) that MySpace have changed their policy on handing over details of known sex offendors to federal agents, they will now actually hand over the details of these people rather than just removing them from the site. I'm assuming this is in response to this proposed law to try and stop it going through.