Yahoo! CEO Marissa Mayer Announces Acquisition Of Tumblr For $1.1 Billion [Getty Images]

NEW YORK, NY - MAY 20: Yahoo! CEO Marissa Mayer attends a news conference following the company's acquisition of Tumblr at a press conference in Times Square on May 20, 2013 in New York City. The internet giant Yahoo! purchased the blogging site Tumblr for $1.1 billion. The company also announced a sleek new redesign of its Flickr photo service. (Photo by Mario Tama/Getty Images)

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