Susan Wojcicki, the CEO of YouTube, at Recode’s Code Media conference in Huntington Beach, California
YouTube is the world’s biggest video site, used by nearly a billion people. Susan Wojcicki was instrumental in Google’s 2006 acquisition of YouTube, and now she oversees its business. YouTube has come under fire for misleading ads and fake news, and more recently for allowing a popular YouTuber to show the body of a man who had committed suicide. The video was eventually taken down.