What Non Porn Things Do You Promote To Your Adult Surfers?

I was just approached by someone to offer credit cards, meaning getting people to signup for a credit card, on my sites and i wondered if anyone had tried promoting this type of thing before or, if you thought there were better non adult offerings that could be promoted to adult surfers instead?

Right now i seem to be doing okay with underwear sales from inside my members areas but im looking for something i can make the focus of free sites or galleries instead.

Anyone have any suggestions?

Regards,

Lee