FRESHMAZA AGAIN

15. Replace Your 300×250 With a 300×600. This relatively ad unit offers an opportunity to devote more real estate to ads. Moreover, the larger size allows you to run more compelling ads with better calls-to-action (which hopefully translate into higher click rates).
16. Replace Your 728×90 With a 970×90. Similarly, there’s a larger size of leaderboard that helps the ads to stand out more to both new and returning visitors.
17. Familiarize Yourself with Google Experiments. It’s now easy to run A/B experiments within AdSense; there’s no reason not to have at least one experiment going at all times.
18. Familiarize Yourself with the Concept of “Statistical Significance.” When running experiments, it’s important to avoid jumping to conclusions based on insufficient data. (There are several free tools out there if you need a hand.)
19. Change the Colors of Your Ad Unit. This sounds like a simple suggestion, but this experiment idea can take on hundreds of variations and become a very lengthy process. Finding the optimal combination of text color, background color, and border color can take quite a while but result in a big jump in earnings.
20. Try the Ugliest Color Combo You Can Come Up With. It probably won’t increase your click rates or earnings, but there’s a chance that going against your guy will result in higher visibility and an increase in clicks.
21. Change the Link Unit Color. Link units will default to the traditional blue color normally associated with links, because this setting generally has the best performance. But in many cases a bolder color will work better, especially if links on your site are a color besides the standard blue. (For example, on MonetizePros.com we would try out orange link units.)

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