I'm trying to find a CPA network to sign up with that has offers that require the user to input their cell phone number, get a pin, and enter the pin on your site. I feel this would be able to generate incredible earnings from the teen age group, without submitting their credit card details (which most don't have). If anybody knows the price range you can make through these offers let me know also. Any CPA networks that have these, please list them. Thanks everyone.