I generally dislike web ads, but I don't really mind YouTube. The ad plays, then goes away. You can even skip it after a few seconds. As far as ads go I think it's a very reasonable implementation.
It probably depends on monetization settings with the channel holder, but it's really annoying. The former kind, I don't mind, but the latter is almost as bad as cable TV.
http://i.imgur.com/wTbpa8a.png
Excuse the dark theme, it makes the checks a little hard to see.
Can you please give an example. I've never seen anything even close to this.