Has anyone ever used them? If so, what was your experience? I looked at examples of their ads with Ad Block on, and they don't look bad at all. The ads are very similar to the types of ads that content.ad shows.
Their website doesn't much explain what they are doing.
I think that their explanation that your site looks "lonely" without ads isn't exactly what those of us installing adblockers see. If it worked and filled your site up with ads again I wouldn't magically expect a big improvement in stats. As an adblock user if I didn't see a way to clear the ad clutter I'd hit Back and find another info source. Since Forbes started blocking adblock users I've lost interest in visiting the site.... ymmv
I wouldn't magically expect a big improvement in stats.
I don't expect ANY improvement, but I do expect that it will pixx the adblock users off enough that they won't come back. Who needs them, especially when you have sites that have your ad income as the only source of income.