Phil_H
It's not just ads. In recent days there's been a FSM hosted popover with a "let's get started" button which completely overlays the page just opened and doesn't appear to have a "close" button.
All due respect to our gracious hosts...but this one is really annoying. I habitually open windows in separate tabs, and it persists in popping up on each and every one!
(Just 'click' anywhere outside the box, and it goes away. But still....
)