I have witnessed a group of people that watch youtube together, in the living room, via Chromecast. They employ auto-play (I mean the recommendation feature), lists, channels, etc.

The result is HOURS of "user attention". Which is specifically not the correct term... :) Sometimes they ignore a video and just chat.

But the point is, they use it as some people use a television. It's just "on".

Because of this, I've seen a lot of "top ten list of..." and "Did you know that...?" videos. Not to mention compilations of traffic mishaps and skateboarding fails.

Quality absolutely doesn't matter. Just ask Budweiser!