Thanks. It's so helpful to have some idea of what the hell I'm doing wrong instead of just fumbling, testing, adjusting...
Targeting artists i think is a slow and painful way of marketing ringtones, just go for the big keywords and spend the money to compete. Make sure the offers you run are converting. If youre not getting a 10% conversion change the offer, or test the same offer with a different network, youll be amazed at how one network has a higher conversion than another on the same exact page.