(Inside Adsense) With section targeting, you can help us determine what parts of your content are important so that your site can show more targeted ads. [...]
Also, we want to make sure your ads are as effective as possible,so our technology detects whether section targeting will improve your results and implements automatically only if you'll earn more revenue.
You may be only comfortable doing this if html is second nature to you (with me its third, but I am getting the hang of it). Otherwise this may be up your ally.
Who knows, maybe I'll try it out with this site. Cheers!