@sigman1998 I think these types of ads straddle the line of acceptability. While they don’t really intrude on the main content of the page, they’re always on screen and close enough to the main content so they are distracting, especially if they’re animated.
Furthermore, if I were an advertiser, I wouldn’t feel I was getting value for money. I’m even less likely to click on an advert I find annoying, unless it’s the minimise button. Like I said, I respect the need to advertise as much as possible, but I’m more likely to click on an advert that’s in the background (at the side, at the top or bottom of the page) than an advert I instantly minimise.