I'm currently a student at a university conducting research on app monetization techniques. We are conducting a short 30 minute Google Hangout focus group to learn about any issues/challenges you face with monetizing your app and problems with current ad networks. No preparation is needed.
Just reply if you are interested an I will share Google Hangout details (voice ok- video not required)! Thank you so much and hope you will help our student group!
Have a nice day.