You want to know what really grinds my gears?
When you are about to tap on some link or whatever on your phone and the app/website with its 8th sense sees that and right before you touch the touch screen, it either moves the content or displays an advertisement so you inADvertently tap it instead of what you wanted to tap.
I hope the people responsible for this sorcery get mutilated and eaten by a horde of zombified liliputs.