At the moment, I'll rather watch Youtube with the app on Xbox 360 on my TV than on my tiny laptop's 13.3" screen. But there's a lot more advertising when using the Xbox... The last GameSack episode even had advertising right inbetween the first and second half.
Odd, but well, for a show like GameSack I happily spend some time watching ads if it helps. Not so much for some junk videos, though.