Yahoo Paying Dot-Com Premium for Tumblr Tests Mayer

Yahoo Paying Dot-Com Premium for Tumblr Tests Mayer

Emmanuel Dunand/AFP/Getty Images

Yahoo! Chief Executive Officer Marissa Mayer and Tumblr Inc. founder David Karp pose for a photo during an announcement that Yahoo acquired the Tumblr blogging site, in New York, May 20, 2013.