How an AD can ruin design

Should design and good user interface be sacrificed for optimal ad viewing? Not in my opinion. CNN, compared to other big news media, has a pretty good site design. However, their new pulse page is ruined by horrible ad placement. In a way the design was successful, because I noticed the ad. However, I noticed it like a teenager notices a pimple on their face. I was disgusted, confused and worried it may leave a scar. I'm seeing this more and more online, and it's getting more and more annoying. Insert Seth Godin quotes here.