Purple CowA revolutionary New York Times bestselling manifesto for marketers from the internationally renowned author of Permission Marketing. You're either a Purple Cow or you're not. You're either remarkable or invisible. Make your choice. What do Apple, Starbucks, Dyson and Pret a Manger have in common? How do they achieve spectacular growth, leaving behind former tried and true brands to gasp their last? The old checklist of P's used by marketers Pricing,