Silicon Valley likes leaders with star power, and they don't come any bigger than Marissa Mayer, the newly anointed head of Yahoo. Her rsum is surely the template for a postmodern, information-age celebrity CEO: Stanford artificial-intelligence degree, employee No. 20 at Google, developer of the iconic white search page, user-experience guru, stunning blond designer-clothes-wearing mother-to-be.
That last bit is getting all the attention, since Mayer revealed right after announcing her move to Yahoo that she's expecting a baby boy (due in October). Not only is the 37-year-old computer engineer the youngest by far of the 20 women who run Fortune 500...