Note that adds are based on what region you're in. I actually get Dutch adds, so it might differ from east to west coast, or even more specific.
That said, I want to add my two cents in the browser discussion.
My browser of choice (and that of a large part of the internet-oriented business world) is Firefox. Mostly for its many extensions/add-ons and utilities. I started using it because it used to be best at pop-up blocking but that's a common thing right now across browsers/platforms.
Anyhoo, I actually have an extention which I use to disable all adds and alter the layout of CB. It removes ALL adds, it changes the width of the blog too 100% that of my screen and it alters some minor graphics.
So erm... neh neh ne-neh neh
No adds for me-heee!