Becoming a celebrity on YouTube can make you very rich. For instance, 27-year-old Felix Arvid Ulf Kjellberg, whose online alias is PewDiePie, was the highest paid YouTube star of the year, raking in a cool $15 million. PewDiePie has more than 50 million subscribers who watch him play video games as he makes snarky comments about the game and the characters. Prankster Roman Atwood of Ohio is the second-highest paid YouTube star. He brought in $8 million, thanks to his 10 million subscribers.