Avoid from Tribal ads network. I am using it last 20 days on my sites with Amazon CPM. From 1.5 million page views and near 7000 clicks. I just earned $144.4. But, when the payout date come. They declared my traffic is invalid and not paying me. I use it as a pass back in Amazon CPM and even provide my Google Analytics account access. They scammed me. I provide them complete access to my Google Analytics accounts. Now, they demand we need server logs. I have no access otherwise, I will provide them.