Beth Karawan Murphy of Catapult Marketing has assembled a Twitter list of brands that tweet. Some brands ask questions for followers (hopefully, customers) to answer, some tweet promotions, some reinforce brand messages. This list is worth a look!
Just a few of the brands on her list include:
Packaged foods, drinks, and household products: Kraft, Coca-Cola, Old Spice, Dove Chocolate, Gatorade, Pepperidge Farm, My M&Ms, Skittles, Ben & Jerry's
Travel: JetBlue, Southwest Air, Carnival Cruise
Retailers: Home Depot, Office Depot, Lowes, Zappos, Best Buy, Ann Taylor, LL Bean, Williams Sonoma, Pottery Barn, Toys R Us
Food outlets: Subway, Dunkin Donuts, Starbucks