The MPAA has caused TorrentSpy, once the most popular BitTorrent site, some serious headaches. After a federal judge ordered TorrentSpy to log all user data stored in RAM, they decided to block access to US users (http://torrentfreak.com/torrentspy-blocks-searches-from-us-visitors/), consequently their traffic dropped significantly.

More... (http://feed.torrentfreak.com/~r/Torrentfreak/~3/166145359/)