Forum Moderators: martinibuster
You may try to find low-quality sites (e.g. parked pages, MFAs, thin-content sites, and the like). These usually go along with low EPC. To make the advertising work, they have to pay as little as possible. Also, as they do not need to take care of any content, they have the time to optimize their campaigns to increase their share of the pie.
I'd go after these sites and see which genuine advertisers will be left over (hint: not many).