Fanboys. Pork dorks. Tech nerds. These consumers have a lot in common: they care a lot about a specific brand, product, or market; they pursue their passions with fervor; and they spend a lot of money in the process. They're superconsumers. Superconsumers are everywhere, and they span categories, countries, and age groups. There are superconsumers of sneakers, bacon, cars, wine, and sports memorabilia. There are even superconsumers of white bread and white socks. Although these fanatics are relatively small in number--they make up only about 10% of consumers--they can drive between 30% and 70% of sales. Simply put, they are the key to fast, simple, and sustainable growth.