MiamiHerald.com | Welcome to Wall Street, Twitter. Everyone's a Critic Mashable Dick Costolo got his start as a standup comedian, but on Wednesday afternoon he didn't have the best material to work with. The Twitter CEO faced a tough crowd during the company's first earnings call since going public in November. Analysts bombarded ... Twitter plunges 24% as investors dash Don't Even Go Near TWTR Stock Right Now Twitter stock sinks on user growth worries |

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