Denny's Free Grand Slam Breakfasts, and the Cost of Free Publicity

As a centerpiece of its Super Bowl campaign, Denny's (DENN) announced plans to serve free Grand Slam breakfasts at participating restaurants for the second year in a row. The giveaway will take place on Tuesday from 6 a.m. to 2 p.m., and the company expects to serve 2 million free meals.