Studios license their content to VideosZ and Videobox
RedTube and YouPorn rip the hell out of the studios
VideosZ and Videobox in turn decide to create an entire site and white label for them.
http://youporn.videobox.com/beta/tou...owse&cid=52842
http://custom.videosz.com/movie.php?...38&dvd_id=3144
Nice!