SAN FRANCISCO - FEBRUARY 1:  Cars drive down 6th Street past a Yahoo! billboard February 1, 2008 in San Francisco, California. In an effort to compete with internet leader Google Inc. , Microsoft Corp has made a $44.6 billion bid to buy Yahoo Inc. Getty Images logo Getty Images 22 months ago

SAN FRANCISCO - FEBRUARY 1: Cars drive down 6th Street past a Yahoo! billboard February 1, 2008 in San Francisco, California. In an effort to compete with internet leader Google Inc. , Microsoft Corp has made a $44.6 billion bid to buy Yahoo Inc.