Income: $15 million
Felix Arvid Ulf Kjelberg is a foul-mouthed Swedish video-game commentator who has absolutely dominated YouTube over the past few years. Kjelberg's videos show him playing various video games while a box in the top corner of the screen shows his reactions to what is happening. Many attribute his success to the attention he pays to his fans — Kjelberg spends lots of time talking about them, answering their questions in the YouTube comments section, and forming a community of "bros."
Kjelberg, however, has said he will delete his massively popular YouTube channel on Friday, December 9 at 5:00 p.m. GMT, after hitting 50 million subscribers. No one knows precisely why, but we'll see if he does it.