As I looked at all the lawsuits that seemed to be brought against people for sharing information on Bittorrent and other P2P networks. I was wondering why Bittorrent trackers don't use IP blocking.
For example, Peer Guardian offers a program that blocks IP addresses from connecting to your computer and vice versa. As well as this I also know that Bittorrent trackers have the ability to block IP's for various reasons (Eg, Bad Seeding, Bad Upload ratio etc). How come then these trackers don't implement the Peer Guardian block list into the tracker. This would stop people IP addresses being snooped in alleged file sharing scandals. As the snooper could not connect to the tracker network. This could solve the problem.
Of course this would just create a round robin of different IP to add to the tracker that these companies use, as well as this it would probably put tremendous strain on the tracker as it would have to manage every IP address. There would probably be a limit as well.
End note: I do not support illegal file sharing, this was just an idea that popped into my head.