Yahoo is one company that definitely doesn't have "quit" in its vocabulary. Predating but practically overthrown by Google and perhaps to some extent even Bing, Yahoo is always in search of new ways to generate income but without budging on its true calling. Under CEO Marissa Mayer, the company is hedging its bets on search. But it won't be taking on Google directly, though of course it will do that as well. Instead, it is training its guns on Google Now, Siri, and Cortana. Yes, Yahoo will once again be entering the personal assistant arena. This time perhaps for real.