Ad Positioning: Tactics to Increase Your AdSense Earnings Overnight

ProBlogger Blog Tips: In this series I’m examining tactics that can be used to increase AdSense earnings immediately. Read the introduction to this series here.
Today I want to talk about positioning your AdSense ads - something that has a very significant impact upon the amount of money that they are able to earn.
I learned this lesson after I’d been using AdSense for some time - I often wish I’d discovered it earlier - because not thinking it through earlier cost me a significant amount of money!
My Story of Learning about AdSense Positioning
I remember clearly the time that my AdSense earnings almost doubled over night through me simply moving them from one part of my blog to another.
Up until the point where I made this discovery my AdSense ads had been largely in a banner position on my blog. I don’t remember my exact reasoning for putting it there but it was probably because that’s where I saw all the big sites doing. My blog’s post pages looked like the diagram to the right.

Performance with this positioning was OK - but then again, I didn’t know any different so while I was earning enough on my blog at this point to make a day or two a week of earnings I was blissfully unaware of the potential that my blog had to take me a step closer to going full time as a blogger.
I’m not sure of why I decided to experiment with my…