[amag]

> The most I've ever seen it "break" anything was formatting issues when people didn't declare the ad div size.

Haha, I remember some years back a popular C++ programming site would break if you didn't have an adblocker because someone had put wide header banner ads in both of the side banner areas, shrinking the text to a single word column in the middle. I guess they only tested their website with adblockers on...