Hi,
I like the anchor ads on mobiles, I get ride of all other ad slots (on mobile), to just keep this one. By default, Adsense displays these ads on top of he screen. There is an option to choose to position these ads at that bottom. I can't make my mind on which one is better. By better , I mean, something which is a good compromise between performance (earnings) and user experience. Adsense claims that, the top positioning, produces better results. However, it's not because Adsense says it, that it's true :) . I wonder if, the top position isn't resulting in accidental taps, since the banner appears right under the address bar of the browser. Also, when you scroll a page, I think that the attention is brought to the bottom of the screen, where the next part of the page is appearing.
Any "personal" opinion?