"More blocks on the page actually works to your advantage. The key is in understanding the way that google serve ads:-
They serve the highest paying ads first.
Understanding that is critical to making good money on the AdSense program.
You want your highest CTR channel ads in your HTML code first.
Having three blocks on each page becomes extremely valuable when you've adapated your page layouts to cater for that.
Look at your page code and see which blocks are being requested first. Redesign your pages to ensure that the highest CTR positions are requesting ads from the server first in the page code." trillianjedi
