Many of the following sites are advertised all over warez and torrent sites, and that's how they get such a major flow of traffic and business. As a result, they are responsible for the most amount of fraud. I have grouped them according to the ones that I have good reason to believe are run by the same people. For all I know though, they might all be the product of one single company of criminals working together:
*If you have any other information, or know of other sites that belong on this list, please post a comment or email me directly at firstname.lastname@example.org.