I signed up for a system that fills a 300x250 space, and it pays $0.145 when the user hovers over it instead of per-click or per-impression. So not huge or anything, but something.
I set my Ad balance set to 100/62 and then set this system as the passback for Adsense, and it raised about $5 today. So again, not huge, but that would be $150 /month as compared to basically nothing from the $0 value Adsense banners, so it's basically free money.
My question, though, is how can I determine where to set my Ad balance to get the most amount of money out of both? It would be helpful if the Ad balance gave a numeric cutoff instead of a percentage, then I could just send anything under $0.14 to it.
I should also mention that this banner size is only on desktop, so I also have to consider that the Ad balance setting will apply to tablets and mobile, too. Desktop coverage for yesterday 69.88% where mobile was 48.49%, so more than half of my mobile ads have no value, anyway.