One more thing to remember here, is to have a very good mobile version of your site / sites, as this is what generates about 50% of your revenue.
The best way to go, is to work with websites like
Bitter Strawberry, and
Sex Goes Mobile (possibly both at the same, time, on all of your sites), and combine it with mobile popunders from
Plugrush.
First Mobile Cash, and
VPS Mobile are also a good choice.