Like anything else, you’ll get out of Google Adsense what you put into it. The following optimization tips can help you grow your Google Adsense dollars:
Write interesting content and write every day.
Have more than one site. The more sites you have, the more ads have the potential to get clicked.
Set up channels and monitor your statistics across all sites. If one site is performing poorly, consider changing the content or the ad layout. Experiment!