From PeerGuardian site
Note To Anti P2P Companies
Some of you will definetely be sending legal threats my way soon. On BitTorrent, I'm intentionally sharing only a couple of KB of each torrent, but specifically, torrents that you are likely to target, I'm sharing this purely for the purpose of trapping p2p-enemy-IPs, nothing more. 3KB (roughly the amount of each torrent I have) of a file - that's around 1/100000th to 1/200000th of the file, which isn't really a great contribution to copyright infringement! - That's what I'm doing, I do expect legal threats but I'm not really sharing the files, I'm intentionally appearing to share them in order to trap your IPs.