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Mayer & Zuckerberg tout success

7:02 AM ET Thu, 12 Sept 2013

Facebook's Mark Zuckerberg says the company's IPO and mobile growth has made his company stronger, reports CNBC's Julia Boorstin. And Yahoo's Marissa Mayer is touting the company's twenty percent growth since she took the helm and defends the company's new logo, reports CNBC's Jon Fortt.