This doesn't abuse AdSense to force anything, it's simply using doubleclick as a stats tracker to see who clicks. If you worship a brand please don't allow it to cause you to spread misinformation about its competitors on the internet.
I'm new to HN, is there no down-vote or report as inaccurate mechanism?
http://www.amazon.com/4-Hour-Body-Uncommon-Incredible-Superh...
If you look at the reviews you'll get a better understanding.