Alternatives to AdMob?

Hi

Apparently there’s a problem in my country (Chile) with AdMob so I would like to know what alternatives do you reccomend?

I’m going to publish my first finished game and I don’t really expect to earn a cent with it but I would like to learn so I put a banner on it and now I need a proper way fo receiving the income.

Regards.

StartApp.com is pretty good. They have banner ads as well as full screen interstitial ads. And they have an SDK plugin for Unity.