I think that it is ok to use adblock. The ads come from Google adwords and if I am not mistaken they do not pay PPV (Pay per View) but PPC (Pay per Click) or even worse expect qualified leads. Meaning that seeing those ads won't wash money into the pockets of the dev team. My time with the German Altavista Ad department is gone some years now, but I gues the revenuestream of such campaigns hasn't increased significantly as well as the conversion rate of such banners. With a man in the middle the money trickling in on the mint side is most likely not really significant.
I would advocate to eliminate the man in the middle and directly give the money where it belongs to. At least thats the way I intend to go, once my final test is through.
Cigarettes are a lot like hamsters ... harmless until you put one in your mouth and light it on fire.