From the ones I'm using the following have reward programs:
OA Internet (Penis Pills, Extender,etc..) (offer $99 just for joining)
SexSearch (Dating) (offer $100 after you send 10 joins, and an Ipod/Xbox or PS2 if you can send 50 joins in 1 week)
Lightspeed Cash (no need for presentations) (points system with shitloads of stuff to trade your points for)
SilverCash (...) (same points system similar to LSC)
Traffic Cash Gold (you get 1.5 per signup that you can later exchange for rewards)
Platinum Bucks also has a similar reward system to the ones TCG, LSC & SC have.
Please ad more sponsors you know that offer some sort of reward system (if possible in the same format I've used ;) )
cheers