This is the best niche store I have used. I do way more sales with them then the others I have tried:
http://www.stockroom.com/affiliates?ref=1883852
For cams I do well with the fetish style ads from AWE:
http://www.awempire.com/ws/referral_...in/wsmain2.php
As far as paysites Kink's are still the best that I can find. Link in Sig.