Great information 4. Use fewer Adsense Units. When I switched from 3 adsense units to 2, I experienced a quick boost in CTR. Many of your Adsense units go unnoticed, which hurts CTR and CPM. Experiment with few Adsense units, and see if it helps your CTR or not. I didn't know that.. thanks
Thanks for the tips. I also heard that red color links can be effective. I am trying it to see if it's true.
I'm not sure if blue link color matter about CTR. For me I still prefer using the title color in the same tone as page background.