To be honest, I cannot stand popup advertising and other annoying things on webpages breaking standard.
First I have started using AdSense here, gaining some cent per year. Great, yeah? Not really. Google pays you as soon as you have earned a minimum amount. In other words, I gained nothing and searched for alternatives. Selling links looked fine to me, and I had a look at it. In theory everything looks promising and I could even quadruple the income compared to AdSense. Sadly math strikes in hard here as nothing multiplied by four is still nothing.
So all I can do is searching for a better solution without loosing my sarcasm.