koan - 12:19 am on Nov 18, 2011 (gmt 0)
Sites that use ads aggressively aren't all bad MFA sites, but bad MFA sites all use ads aggressively, so it's a respectable indicator, combined with others, that should tilt the balance in case of doubt. You can try and defend your right to spam visitors all you want by saying you're giving your extra profit to charity or whatever, but the end result is your site share many characteristics with unwanted sites that reflect poorly on Google when users are frustrated.
(yes, even if actually suggested by the Adsense team, you still need to use your own judgement).
I'm kind of disappointed that so many WebmasterWorld members use "in our face" tactics to make money and want to keep it that way.