I was just in Turnip Truck (buying a lime if you must know). At the soup station I saw a sign notifying customers that the East Nashville market is now twittering updates on what soups they're serving (there are always two--one meat and one veggie). You can check them out at twitter.com/turniptrucknews.
I think this is a really clever idea, even if the check-out clerk did look at me like I was crazy when I called them the "Rick Sanchez of local grocers."