[Mister X]

I don't think there actually are any click thru programs that are worth it any more. Maybe amateur pages - http://www.amateurmoney.com - and the only pay per impression programs use nasty and irritating audio ads, etc. like http://www.mtree.com . But mostly they don't pay great and they often have a shitload of popups and such which can cause you to lose traffic. Since you are getting your traffic through mainstream sites I think you will want to be extra careful that you don't send them into pornsite popup hell. In adult I think the best money is in the per signup or partnership programs and they usually will let you have better control on what happens to your traffic.