From my experience you should look for a bounty program that pays per rank, not per post. I got scammed by ChangeBank because I only got about 1/5th of the deserved amount, and I wasn't the only one by far, and the team doesn't even address my questions. Currently I'm doing bounty for Adbank, which is a lot more communicative team and I'm positive they'll handle the situation a lot more professionally
ah your talking with the signature campaign, yes now a days they are paying base on your ranks and all of you are posting the same number per week, but at the end higher rank will still get the bigger share, payment per posting is not good since some can say your post are not quality and they can deny its quality anytime.