Those of you that think you are getting screwed by streamray should watch this thread
http://www.gfy.com/fucking-around-and-business-discussion/767293-test-lifetime-sales-sponsor-graph-streamray-example.html
Personally I think a lot of you are just sending a small amount of traffic and expecting to see results that just aren't going to meet your expectation for the traffic your sending. It's that or your using PPS with a cam sponsor which is just fucking crazy. There is a hell of a lot more money in cams than in monthly membership sites. Why would you waste all that potential income on PPS.
You should also realize that cams.com is not the best cam site as far as model selection. AWE is by far the best but you have no revshare option since they track by a 14 day cookie and it's not even from the day of username signup, It's from the day their computer hits their site so if they sign up 3 weeks after they hit the site you don't see shit and even if they do sign up when the day they hit the site you still only get sales for 14 days. After that it's up to AWE whether or not they want to give you more money.
At least with streamray you get to track signups over the lifetime of traffic. This month is going to be around $600 in sales if I'm right and I bet this winter is going to kick ass.