16 Jul 2012, California, USA — FILE PHOTO – Yahoo, Inc. named Google executive Marissa Mayer to be its next CEO, its fifth in five years. PICTURED: July 7, 2008 – Mountainview, California, U.S. – MARISSA MAYER, Google’s VP of Search and User Experiences on the Google campus. Mayer was the first woman hired by Google, in 1999, and one of their first 20 employees. (Credit Image: © Martin Klimek/ZUMA Press) — Image by © Martin Klimek/ZUMA Press/Corbis