You can get ads from any of the following, Google - AdSense Yahoo - ad network Bidvister clicksor and more. My favorate one is a new one that was launched not too long ago. It's currently in open pre-alpha so it is still being developed. Currently though all you can do is display CPC ads however they are stating that they will be releasing CPM and CPP (Cost per popup) soon. They only pay out with PayPal though so if you dont have a PayPal you cant really get your funds. You also get a good amount per click and the payout is only $5.00 USD! This is their URL incase you want to join them; http://forums.xisto.com/no_longer_exists/