Marissa Mayer, president and chief executive officer at Yahoo! Inc., right, speaks with Adam Cahan, senior vice president of Mobile and Emerging Products at Yahoo!, while leaving a press conference at the Yahoo! Inc. Mobile Developer Conference in San Francisco, California, U.S., on Thursday, Feb. 19, 2015. Mayer unveiled a suite of development tools for mobile applications that integrate its own advertising services with features it acquired with analytics startup Flurry Inc. Photographer: David Paul Morris/Bloomberg via Getty Images

Toxic Leader Transition (A Mini-Case Study of Yahoo!)