We removed them. The bottom line is that for the irritation they just weren't providing the right experience or revenue. We'll have to figure out another way.
According to the source of the page, the minimum paying ad you were willing to popup was 0.000000, I think. All I know it was all zeros. So I have to wonder if there's good paying popups that are worth all the trouble and frustration they provide to people, even more so on mobile devices.
A common practice by some people is to have ads that only pay per click, and then encourage people to click ads. People have no idea if your ads are per impression or per click or both. Some people would be willing to help and click an ad to load a page when they wanted to.