We run several sites, one of the larger ones is about 120-140 million impressions per month and around 20-40 mil visits to the site per month with about 9-11 mil being unique. We have been with adsense for a while and have still not been offered premium. Hope to be able to share what works, and hopefully also learn some things. Would really like to know if people are seeing big pay difference with DFP or no DFP, to serve the ad's. We have seen some interesting results site to site.