CPM means cost per one thousand views. To figure it out, you divide your total spend by the number of views, then multiply by 1000. For example, if you spend $5 and get 2000 views, your CPM is $2.50. eCPM means how much you earned for every 1000 views. You calculate it the same way, but use your earnings instead of spend. Both help you understand how well your traffic is working. CPM tells you how much you’re paying, while eCPM shows how much you’re earning. What are other ways you think these numbers can help with pop traffic campaigns?