Higher CTR With Good Adsense Design
Obviously Adsense positioning is pretty important and the "heat map " is a useful guide.
However, Adsense design is another equally important facet to consider. Probably the most common piece of optimization advice you'll see is matching ad design to site design.
Engineeringtalk's recent design makeover discussed on Inside Adsense and my previous post gives further credence to this:
"The Engineeringtalk team experimented with AdSense designs, focusing on optimization through typography and placement. They found the biggest influence on CTR was the similarity between the AdSense type (size and font), and the main body text of the page. The more similar the type, the higher the CTR."Technorati tags: blog advertising, adsense placement, adsense design