I actually did some reaction video's on Youtube thinking nothing of it back in 2013. Not every single being was doing something like that then. I wasn't a big Youtube guy and only had like 135 followers or so and thought nobody was actually watching my content. I was basically doing it for the hype of my hobby and my own interest and friends. I did a reaction video to a 'Man of Steel' trailer and it got like 17,000+ views over night or so. I was shocked. Then I had random people inboxing me to do more. One dude even spliced up a handful of like, 50+ reaction video's and spliced it all to one compilation. I haven't done anything like that since, though. Nowadays everybody is doing it and it just makes for bad viewings with fake reactions.