You can try and play around with your ad placements, for example at the top of the article, in the middle, at the bottom, sidebars, etc. Each of these placements will have different CPC’s.
For example, an ad at the top of the article can earn more than one at the bottom of the article simply because your visitors will see the ad first and then the content, plus they won’t always read your whole article to reach to the bottom of it in order to see your bottom ad. So try and test various ad placement positions on your website and see which ones are the best performing.
Contributor: Stephen Montagne from nethustler.com