I'm really sick of the number of ads Youtube is putting in their videos now. For a short video they just put one ad at the beginning and I can handle that. My beef is they started putting ads about every four minutes in longer videos. Any hour long video has 16 or 17 breaks for ads in it. Even broadcast TV doesn't stop for advertising that often!
I used to use Youtube to listen to music. I quit doing so when they started inserting so darn many ads. I have to constantly flip back to my Youtube browser window to skip an ad, or I have to listen to a 15 second ad. some of the ads now for non-profits are four to six minutes now, but at least you can skip them after five seconds. I think the amount of ads they are inserting is backfiring because people like me just quit using Youtube altogether. I was slightly irritated when they first started doing it with ads every 8 to 10 minutes, but every four minutes is over the top.