How a 23-year-old makes $500,000 a year tweeting random facts

When Kris Sanchez joined Twitter in 2009, he didn't expect much to come of it. "I really started my Twitter account because I wanted to follow Britney Spears," Sanchez told Business Insider. "I'm a huge fan." He found he didn't have much to tweet about in his daily life, so he started sharing random …