There are a lot of threads on child porn which I suspect you are referring to. Use the search feature for those words and yoou will find that you want to know about the subject. Report the *******s to the authorities. A good number of them are being locked up as a result of police activity and hopefully reports from users of p2p among others.
A good link to start with is
http://www.gnutellaforums.com/showth...ght=child+porn