Probably depends on how you get to YouTube on TV. Usually I get there having found something interesting on my laptop, and casting it to TV - the shorts are there, second row down, every time.
I don't have a FB account (not any more) or Twitter. I only look at them if there's a link to something that might be slightly interesting (like from the Ukraine thread on here).
The shorts on YouTube are annoying though; I've realised now that they're inevitably disappointing, so I've pretty...