I ran an experiment last night by replacing a small ad for a mobile site thats located near the top of the page with a larger box ad, but I moved that ad towards the bottom of the page. Ten hours later, I earned more money than what I earned yesterday. This made me start to think.
According to Google, "Above the fold" means everything the user can see on one screen without scrolling. The problem is, not all screens are of the same resolution, especially mobile.
I want to optimize my ads but at the same time, not break any adsense rules.
My question is how much of the screen qualifies as "above the fold" on both a mobile site and a desktop site from the adsense bot's point of view?