AMERICA IS A NATION OF SNACKERS. Whether they're reaching for chips, pretzels, puffs or popcorn, consumers are increasingly choosing to graze their way through the day.
As one of the Top 5 categories in the supermarket, the implications are enormous. Snack sales in all channels, including Wal-Mart Stores, surpassed $16 billion this year, a 1.3% increase over 2010, according to the Nielsen Co. Retailers are faced with a constantly shifting ais