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Twitter Inc. (NYSE: TWTR) co-founder Jack Dorsey on Tuesday said Elon Musk—a fresh backer of the microblogging site—leads with his heart, prompting the Tesla Inc. (NASDAQ: TSLA) CEO to exchange pleasantries. What Happened: Dorsey said he was happy that Musk was joining the Twitter board. “He cares deeply about our world and Twitter’s role in it.” Dorsey said that Twitter CEO Parag Agrawal […]