Yahoo appoints former Google exec Marissa Mayer as CEO

As a top executive and employee number 20 at Google, there wasn't necessarily a tremendous opportunity for growth at the Mountain View search giant. That may explain Marissa Mayer's recent decision to jump ship in favor of joining Yahoo as the company's chief executive -- a role the former Google VP of Local, Maps and Location Services plans to assume tomorrow. Mayer joined Google way back in June of 1999 as the company's first female engineer, and remained employed until her resignation earlier today. There's no question that Yahoo will be in good hands -- its new CEO does in fact have a degree in computer science -- but the company's future still remains in question, following a clear inability to catch up to its chief competition.