It is very important to find out optimum positions for your ads to maximize your Adsense earning. You can get highest CTR (Click Through Rate) with proper ad placements. In my recent post, I have shown how to place Google Adsense ads below blogger header. That is a most preferred ad placement. Another position that can generate highest clicks is between posts and comments. Often, visitors like to read comments after reading a post so it would be an opportunity for you to place your ads between your blog posts and comments to enhance your earning. Most preferred ad sizes for this position are 300*250, 336*280, 468*60, moreover, you can also use link ads here.