“At Twitter, where anxiety and optimism are never far from one another, the leadership is surprisingly frank about these problems. To start with, the audience is alarmingly fickle. Nielsen estimated that user-retention rates were around 40 percent. Twitter was easy to use at an entry level, but after a while it was hard for some people to see the point. Twitter has claimed as many as 175 million registered users, but numbers leaked to the online news site Business Insider in March put the number of actual people using it closer to 50 million, correcting for dead and duplicate accounts, automated ‘bots’ and spam.”

“Tweet Science.” — Joe Hagan, New York magazine

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