I see them mostly on the main board index, but they'll turn up anywhere.
It's kind of weird when you're in the office, scrolling down reading a thread, and then this is down at the bottom of the page. That's precisely why I don't look at the sexy album covers thread at work, I know what to expect there, and it might not be the best of things to show up on a 17" monitor that anybody can see walking by.
But these google ads, there's no predicting where they'll be, and the photos do stand out, small as they are.
So hey: