Seems they are wrong, as far as I can see.
We stuck up
www.5dollarsporn.com/petra a few weeks ago and at first it was very slow. Then we put up the others.
http://www.5dollarsporn.com/christine/ http://www.5dollarsporn.com/kay/ http://www.5dollarsporn.com/grace/ and sign ups took off.
OK the traffic is very low as we have not really started to promote but ratios are outstanding. Will be interesting to see how they proceed when we start sending more traffic.
No affiliate program for this site, sorry guys.