I have never eaten here, but this is a good deal to see if I would like it ;-)
Go here to get $12 for $25 worth of Tavern Fare and drinks at Madison's Cafe in O'fallon, MO
2974 Hwy. K
O'Fallon, Missouri 63368
Also on Groupon today:
$10 for $25 Worth of Nuts, Dried Fruit, and More from Nutty Guys - this is an online deal for everyone!!! I have ordered from here before and loved it! I would highly recommend!
$12 for $25 Worth of Ink and Toner Refills at Cartridge World in Creve Coeur
$25 for Bowling and Shoes for Up to Six People at Concord Lanes ($50 Value)
$7 for Three 20-Ounce Smoothies at Smoothie King in Chesterfield (Up to $14.97 Value)
All of these deals can be found under St Louis here.