Marissa Mayer joins list of big suitors, says AllThingsD
                                
                                
                                    (Newser) -
                                    First Tumblr , now Hulu? On the heels of its billion-dollar acquisition of the blogging site, Marissa Mayer's Yahoo has put in an offer for the video-streaming site, reports  AllThingsD . This time, however, Yahoo has some serious competition, with the likes of DirecTV, Time Warner Cable, private-equity firm KKR,...