I would agree with the above that it really do depend on your traffic. At the end of December I started promoting hustler live,Their live webcams. I have their promo's on my blogs and with the little traffic that I have I have made 10 sales in just over a month. I would recommend that you drop their ads on your sites and see what the results are for you.
I have their promo on two places on this blog as an example..
http://www.hotwomenblog.com/
Here is a link to the webmaster area..
HustlerCash