Are they stealing your bandwidth?
 

http://www.pornolizer.org

They even test to see if you have ref logging enabled in your browser and tell you to disable it before letting you view the galleries. All the images are hotlinked, and they link directly to movies. Surfer never sees a sponsor link whatsoever.

They've got fake whois info so a few reports at http://wdprs.internic.net/ might help.