PewDiePie: why 30 million teens watch a guy play video games
PewDiePie: why 30 million teens watch a guy play video games

PewDiePie is the most subscribed channel on YouTube, and its creator makes more than £2 million a year on ad sales. He's one of YouTube's elite – a new generation of hyper-influential media moguls. But why are 30 million teens watching a stranger play video games?