The following is a discussion of the Greasy Spoon badge on Foursquare.
Description: Sticky vinyl booths, bottomless mugs of joe, apple pie fresh out of the display case… Does that waitress have syrup on her hairnet? Sounds like diner heaven to us. Now, treat yourself to onion rings. Or a milkshake. We suggest both. Say hello to pancake town! You'll need 5 DIFFERENT diners under your belt to get to Level 2.