We all know there are various ways to make money with mobile apps, Like in-app billing, charge your app at google play, or simply sell your app...but for most free-to-play games/apps, one important way is to run mobile ads in them. Also with the fast growth of smartphone(android phones/iphone)'s usage nowadays, mobile advertising is booming and maturing now. There are really tons of mobile ads. networks already there. but I believe many indie developers just feel a headache at how to choose the best one for their apps and which ad network is making realistic claims. Is there anyone who has experience on that?