Those of you who are downloading music and videos illegally (Bad! Naughty!) should know that nearly 100% of P2P activities are monitored by anti-filesharing organizations and government organizations who are perfectly happy reporting your activity to the authorities and getting you sued by the MAFIAA.
For a long time people have been using PeerGuardian 2, a program that uses blocklists that you choose to block your computer’s internet access with specific IP addresses. There are a few lists that are specifically made to keep your torrent client from talking to IP addresses of known P2P monitoring organizations and therefore keeping you out of trouble and out of jail. This way you can avoid anyone having solid evidence of your online activities being less-than-legal.