http://www.adultplatinum.com/wm.html?id=603415 - I'm sure they have sites that would match the 'gangbang' category.
http://www.nastydollars.com/?wm_refer=sascha - Euro Sex Parties and intheVIP usually end up being gangbangs.
http://referral.topbucks.com/?revid=20760 - Gang Bang Squad as one example.
http://www.trafficcashgold.com/?wm_refer=ktj4l - They have some gangbang sites with their 'classic sites'.
http://signupsb.triplexcash.com/cgi/...e=32&program=3 - They have gangbangs on a bunch of their sites.
http://joinrightnow.com/referral=sascha/ - Her First Gang Bang is one example.
http://www.platinumbucks.com/?revid=210371 - Gang Bang Lessons is one example.
http://www.occash.com/track/MTA5MToxMToxMg/ - Brazil Bang is one example.
http://nats.braincash.com/track/MTAzNDExOjMwOjIw/ - They just released Girly Gang Bang.
http://adultlounge.com/ref.php?w=103402 - I'm pretty sure they have that niche covered.
http://amc2.adultmegacash.com/wmreg/hit.php?w=102008 - Oriental Orgies is one example.
http://new.pimproll.com/ref=pimp6238/index.html - They have a few orgy sites.
http://www.meatcash.com/index.php?ref=sascha - Real MILF Gangbang is one example.
http://www.adultplayersclub.com/ps.p...C&u=ktj4l&pg=3 - Gang Bang Divas is one example.
Hopefully that'll be helpful.