being one of the people that Pays for TRAFFIC from the statistician I can tell you that on our end the ranking is fair. We pre-pay them for the traffic that they send to our sites.
Most deals I cut with WM's are for $35 per join but because our normal join rate is $30 they will only accept $30 per join in the testing.
I know for sure that Meatman and Aga run it a cleanly as is possible. I certainly can't comment on added joins to improve rankings.
