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Why Marissa Mayer's 'nerd cred' just may save Yahoo

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Bloomberg Businessweek's Josh Tyrangiel joins Morning Joe to discuss Yahoo CEO and President Marissa Mayer. Mayer took the job in July 2012, and the company is currently experiencing a dip in revenue, from $7.2B in 2008 to 4.8B over the past 12 months, but Tyrangiel says Mayer has a vision for boosting the company's mobile content and that could save the company.