I use yesadvertising. Funny, i actually started using it from learning about it many months ago from this very page.Now im back to state my opinion of it.Its not too bad, im still using it now.However.Popups are getting blocked more and more these days by those popup blockers, very annoying blocking them.Yesadvertising has many rates, meaning impressions coming from different countries pay different amounts.Im pretty sure yesadvertising is paying for non unique impressions.Yes used to have banner, interstitual and another way to earn income aswell. Now they have ceased and only the popup ads remain. They could tell people this rather than just letting them run the other ads for a week before finding out that the revenue isnt cominng in from anything other than impressions for popups.In all yesadvertising is pretty good and im still using it after many months