Many websites use Google ads, even PF does. Usually this includes a block with different areas to click on. It used to be the case that when there was a click area the mouse over icon, usually a finger pointer, would be enabled so that web users are warned that this is a clickable area. and they can decide freely if they want to go to the link or not. Lately however there is a newr version (not yet in PF forums), now in between the ads the mouse over indication stays of. So now every time a web user clicks, in the understanding that he just positions the mouse to for instance do some scrolling the link gets activated even if he never intended to do so!. And thus more revenue for Google and probably more upset advertisers.