More than 50% of the internet are totally for losers, by losers. You know, ads for 10000 smileys with spyware, illegal green card lotteries, online poker and illegal SMS contests to "win" an iPhone. Only very few ads are fair businesses advertising their genuine product.
I don not want to be part of that crap. That is why I use Adblock. I have no problems with fair ads. NG appears to have the technology to show some fair ads to Adblock users.
Why, then, do you have to use that technology for such ugly ads? Use your technology to show some proper ads for your TShirt store. Not some random ugly images made in MS Paint with the text "you're a dick and you suck" on them.