Hi Nick,
ExoClick.com is an adult ad network CPM and CPC based. We manage +700M impressions a day. We provide the largest choice of premium adult ad spots in our user friendly market place. You'll be able to buy traffic from the biggest adult sites in the world. We provide real time statistics (imprs, cost, ecpc, ctr), efficient tracking tools to follow your ROI in real time and many trafficking options.
You can sign up here:
http://www.exoclick.com/signup.php
Once your account loaded, your campaigns will go live within 15 minutes.
Don't hesitate to contact me if you have any questions.