super bowl advertisements

Call it the "second-screen" Super Bowl. About two-thirds of smartphone and tablet owners use their gadgets to do things like text or post on Twitter while watching TV, according to research firm Nielsen. So, for Sunday's game, companies from Coke to Chevy are trying to reach fans on all the "second screens" they have.

While watching the Super Bowl this coming February, some viewers may notice a conspicuous absence: PepsiCo, which has advertised during the past 23 Super Bowl shows, won't be running any commercials for its bubbly drinks.