I am working with a company currently that is in the 'Free Business Card' niche. They basically built a business card designer, let people log in and make the cards for free, then charge shipping to get the cards delivered. They're paying 10% on the affiliate program at the moment, but are having limitted success and terrible conversion rates. Anyone with ideas, let me know and I'll get you into the affiliate side of things. Any method is welcome, it's currently an e-mail marketing enterprise, but anything else you've got is fully accepted.