I'm glad to hear I'm not the only one being wound up by that advertising window.
Cross it with the cursor, and it starts up...
irritating!
Click the "close" option (top left corner), and it only pauses for a couple of seconds, then starts up again...
deeply irritating!
You're in the middle of a lengthy missive, and are trying to concentrate on your thoughts/grammar/syntax and you know that the only way to shut the damn thing up is to back out of that page...
homicidally irritating!
Do you know, I have absolutely no idea what that advert is/was actually for, as I was too busy being irritated by it to notice.
If I could recall what the product/service was on that advert, I wouldn't buy it on principle.

PS
I have just discovered that you can shut it up without backing out by hitting the "Preview" button.

Knowledge comes, but wisdom lingers.