I refer to this question here:
Adsense Page impression is showing zero
Where the guy wants his adsense ads to display correctly, but his site is clearly just an ad farm, so much so that it loads dozens of popups, popunders, and ads that would put people into eplieptic fits. It's this kind of site that is ruining the internet (in my opinion) and that the Stack Exchange network is trying to pound into oblivion.
Should we help these people with their problems? I know this sort of stuff has come up on other sites (Should we help people circumvent security/break someone's app/stop admins from doing things/etc) and the general consensus is that as professionals, we shouldn't help people break the law.
But what about here? I feel this is a grey area, but that's the main problem - it's all got to do with what I feel, which is what ethics and morality is all about. There's no one size fits all.