I recently saw an advertisement about the Adsterra ad network in Facebook ads. I want to know is it a legit network to join or a scam. I didn't saw any payment proof of the network online. If it is a legit one then what is the cost per click (cpc) and cost per thousand impression (cpm) provided by the network? what is the payment options provided by the network? Thanks for your valuable feedback and advice in advance. I'm already running Google Adsense, Infolinks and Chikita in my blog.