High Performing Google AdSense Units
For high performing Google AdSense units, as a rule of thumb, wider ad sizes tend to outperform their taller counterparts, due to their reader-friendly format. Readers absorb information in “thought units,” several words at a time. Wider sizes let them comfortably read more text at a glance without having to skip a line and return to the left margin every few words, as they’d have to with a narrower ad.
If positioned well, wide ad sizes can increase your earnings significantly. The sizes Goolge have found to be the most effective are the 336×280 Large Rectangle, the 300×250 Medium Rectangle, and the 160×600 Wide Skyscraper. Keep in mind that while these ad sizes typically perform well, you should use the size that best complements your pages.
Tip for making the most of a little ad space: Try one of our streamlined link units, shown below. These sizes are versatile enough to fit in locations normal ads don’t.

Learn more about how you can upgrade to high-performing ad units in the video below.
Originally posted 2011-10-03 19:09:37.