Microsoft (Nasdaq: MSFT) is offering $45 billion for Yahoo! (Nasdaq: YHOO). Does Microsoft + Yahoo! = Google (Nasdaq: GOOG) or does Microsoft + Yahoo! = AOL-Time Warner (NYSE: TWX)? Will Yahoo!'s stake in Gmarket (Nasdaq: GMKT) deliver big returns for Microsoft? In this installment of "Fool Video," Motley Fool analyst Tim Hanson gives his take on the big deal of the day.