"Klout once aspired to be the Q Score of the Internet: a way of tracking reach and influence across Facebook, Twitter, LinkedIn, and other social media. Its algorithm has always been a black box. But the company moved beyond the vanity metrics of social media—things like number of friends or followers—and into deeper indicators of engagement, like retweets. By doing so, Klout tried to become the world’s first and most reliable standard of measuring social influence. It never quite got there..."