You should check out TorrentPrivacy.com    I can tell you 100% that PeerGuardian does nothing to stop this current Lucas situation.  His people attached themselves to a torrent, and took screenshots of all the IP addresses that were seeding/downloading.  PeerGuardian doesn't do a think to stop that unless it knows the IP address of Lucas' atty's, which it didn't.  You must have a VPN service which masks your IP address.  If your IP address is visible, you are 100% open to a future lawsuit by some other studio that pulls the same thing.