So guys, I just want to hear your thoughts about that; I'm planning to use coupons to buy adwords traffic and using fraudfilter (Fraudbuster) to redirect then directly to the opt-in. As I'll be using vouchers, I'll be able to low a lot my CPC and keep split-testing my keywords. (I'm using proxys and ghost browser to take this vouchers). In the meanwhile, I'm working in a CPA offer hub, I mean, several contextual links in a way that makes sense to the customer to opt-in multiple times. What do you think? Any advice? Thank you for reading anyway!