I'm pretty sure somebody is advertising on my site through impressions and the pay is really low. I would like to put this site in my ad filter if I can find out who it is. Honestly why does the G not allow publishers to negotiate how cheap we'll sell our ads. Not allowing us publishers to have any control is kind of a bass ackwards economy. Should prices be dictated by supply and demand like the rest of the free world?
i think there is no way you can know whose paying for your site impression. maybe you can try to email google, but i think, the wont let you. unless if you pay attention on ads that apears to your site....... lol