As you can see large size ads are more likely to catch the eye, but if they are placed poorly within the site’s design, I doubt that the size will make much of a difference.
Your adsense ads should blend in with the rest of your web page content, for better click through rates.
The bigger sizes would call attention to the ads so that people who actually want to click on them can easily spot them.
You can use a web editor and review common problems you might experience after pasting the AdSense code. This explains how to place adsense code in detail.
To copy your code, highlight the entire contents of the Your AdSense code box by clicking anywhere in this box with your mouse. You’ll know the code has been selected when the entire contents of the box are highlighted in blue.
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