thedonald123 - 5:53 am on Jun 26, 2012 (gmt 0)
There is an advertising ecosystem which never seems to get mentioned in these threads. Have you tried other CPM Ad Networks?
I use DFP as an ad server. I let Adsense compete against my Ad Networks. Adsense ends up with 100% of intentional traffic and about 30% of US, UK and Canda. The rest goes to Tribal Fusion, Admeld, Lijit, Burst then ValueClick.