I suppose it did have to happen sooner or later, Wired is reporting on Nudester.
Nudester, a file-trading network for adult entertainment, allows its operators to have more control over who and what is on their networks thanks to automated programs that troll the system.
Nudester works with several layers of filters and technology to ensure that child pornographers and their ilk don't invade the system. The content filter automatically blocks anyone who searches for flagged words, such as child or kid. Those searches are automatically blocked, said Maximilian Andersen, one of the Nudester developers.
What's interesting here is no so much the pr0n sharing, but the implications that filtering technologies could have on other peer to peer software. Sooner or later, some of the copyright heat is going to get turned onto the p2p networks, making the prospect of filtering p2p very interesting.