One of the best popunder networks in the advertising industry. Adsterra CPM rates are usually higher than the most similar networks (up to $5) and fill rates are always 100%. Adsterra definitely is a great AdSense alternative. They only accept sites with at least 50,000 unique visitors per month and Alexa rank less than 1M, however, once you’re in, you can make greater profit. Adsterra is always cautious about the quality of ads and traffic. They do not work with malware ads. Adsterra Network offers premium advertisers, high rates on a CPM basis and gives publishers % 80 revenue share. Traffic requirement for publishers must be at 50,000 uniques/month level. It is very simple to work with Adsterra and make huge profit, as long as you provide true traffic and play fair. Adsterra has no tolerance for copyright infringement content. Adsterra always pays on time as long as you reach your $100 threshold.