However it is primarily a cultural phenomenon, it's simply spread to the rest of the world as part of the US cultural zeitgeist and near-hegemony.

My interaction with YouTube is pretty much the search bar at the top. I generally only go to YouTube when there is something specific that I want to watch/listen to: a specific song or video, etc. So there's little reason for me to subscribe to anything.

If you truly believe in jury nullification, you won't mention it to the judge or prosecutor though...

Unfortunately, the easiest way to get out of jury duty is to be a scientist, engineer, or lawyer. No attorney with half a brain wants anyone of those three professions to be on a jury deciding the fate of their client.