I'm setting up a "cheap" adult hosting resource and review site and looking for related upsell items, like scripts, programming, domain registrars, page parking services, billing processors, etc to also advertise on it. I'm having a hard time coming up with good adult webmaster resource products that have a referral program! I'm currently hunting down a billing resource or 2 ... anyone have some suggestions??

and if you sell such a resource and have a referral program, please post it here!