I'm not one of the AdSense power users, always considered it a sideline. I don't even look at stats every day. I have seen an increase over the past few weeks that does not fit with others' observations over August. Not an earthshaking increase but noticing that recent changes on my part seemed to improve earnings. I switched to a fixed size ad at the top of the sidebar that is 320 x 100 so the same ad can show for desktop and mobile. Near the top of the page on desktop and across the top of the footer in mobile. It earns better than what I had been doing which was to use different sizes with media queries. Am I the last one to notice this?