When your main source of income is from ads, placing your ads at the right place and using the right type of ads is crucial. Here are some of my tips on how to maximize ad revenue:
Experiments: If you are using Google Adsense, then what you might find is a feature called “experiments”. This feature allows you to test ads with different features and see which one generates better results. If you want to maximize your income, then choose the type of ad and color variation that performs best. Personally, for me, I see no difference between a text ads and display ad; the color variation also plays a very small role in performance of ads. However, you should still try this as you may get very different results.
Choose best type of ad: It is important to understand what your website does well in. Does your ads get lots of clicks? Does your website get lots of traffic but have very low Click Through Rate? You should choose your ad network according. If you get lots of traffic but low click through rate, then you should choose a CPM network. If you have lots of clicks, then Adsense may be good for you.
Choose the best placement: Assuming, you want to maximize the number of clicks, it is important to put your ads at the right place and do this wisely. From my personal experience, the footer spot has very low CTR so this is a slot to be avoided. The header ad and the below first post ad (for forums) works best.