I heard bad things about them, try conceptmediadesigns.com's affiliate program. They do not use cookies as a tracking system! instead give out a coupon for $20 discount and you get %10 on any person who uses that coupon#.
His website in his profile is the same that he recommended, so that's probably the answer to your question.May I ask what bad things you've heard?
We do attempt to be proactive on issues, but we're rather small.