two things i wanted to note here:

1. i worked as a consultant for a str8 program with 5 sites that used NATS. we had not tons but a fair chunk (over 10%) of surfers who came back repeatedly before joining (weird because these sites didn't update). i'm talking 2 - 6 weeks, and in a few cases over 8 weeks.

2. how do you think pps programs pay $35 per sale? besides upsells, cross sales, and those guys who rebill for a year and a half, the no cookie guys and the returnees they don't pay for helps a lot. i'm not thrilled with pps, but i can live with it. but with revshare, it's not really fair...