Ask any group of American kids what they want to be when they grow up, and a few are bound to shout out, “YouTuber!” The popularity of the internet’s most powerful video platform (and its superstars) among Gen Zers and millennials has eclipsed that of all ­other social media sites, streaming services such as Netflix and Amazon Prime, and even TV. In May 2018, YouTube parent company Google reported that the social network had 1.8 billion monthly active users. That’s more than Gmail (which has roughly 1.4 billion active users) and just behind Facebook, the biggest social network in the world, which has approximately 2.2 billion active users. For today’s youth and young adults, streaming video is huge. As a culture, we watch more than a billion hours of YouTube videos a day. And according to a recent study by comScore, audiences are around 10 times more likely to ­engage, em