Though it sounds like a great name for a retro oldies band, I'm actually referring to loyalty program best practices when I talk about Pig Perks and the Perkolators. Pig Perks is a loyalty initiative being tested by grocery chain Piggly Wiggly Carolina Co. (affectionately known as the Pig) at selected South Carolina locations. Customers access Perks offers at front-of-store kiosks. Not incidentally, kiosk is a funny word, but it isn't a fun word. We don't like to call them kiosks, Diane Colgan, Piggly Wiggly Carolina director of marketing, told me when I called to ask about the Perks. We think they're a lot more fun than that, so we call them Perkolators. So what's all this fuss about fun? It's a core driver of the Pig Perks program design. A little background: Pig Perks is layered on Piggly Wiggly's existing loyalty initiative, participation in the Greenbax coalition. Customers who earn Greenbax points at the Pig can