I cant seem to find a decent CPM advertising network that will accept my site. My site is fairly new but I cannot promote it until i know I have some adverts in place to make money back. I get refused for not enough traffic but they have never seen my analytics?! My site is stockola.com and it is a really useful site that web masters can use to get free images why would they not want to use my website?!
I am not sure why. But you might want to try those popunder networks that supports asian traffic sites. if they work for asian traffics, its obvious they are big enough to support international, see my list of reviews that i personally tried for Singapore / Malaysia traffic - http://blog.cripperz.sg/2013/08/15/best-popunder-ad-networks-for-asian-international-traffics/
I have been using edomz cpv network over 3 year now, and set only 1 pop ad per user session, it works good without annoying my site visitor, since most of my traffic is from Asia, I earn mostly between $2-3 for each 1000 visitors