We beta-tested the first SG affiliate program (I think they are on number 3 or so now) back in 2001 or so. I don't think we ever got paid, but I've never been able to get any affiliate support from them, not even with a certified letter.
If you have that sort of traffic, then
Blue Blood's SpookyCash is probably a good bet for you as a sponsor. No effed up rules about proper affiliate promo and we've got all the tools like FHG's, affiliate coded RSS, hosted full TGP where you get credit on every link, etc. Here are a few photos Forrest Black and I shot for SpookyCash stuff:
If you have whale traffic, please feel free to hit me up at 337070007 with any special needs and I'll do my best to accommodate.