How well do you know your customers? This seems to be a key question on the minds of not just marketers, but company strategists these days. We have shifted from a competitive landscape in which companies are more exclusively focused on external forces affecting their industries and sectors, to one that has become significantly more customer centric. This intensive customer focus has increased as technology-enabled transparency and online social media accelerate an inexorable flow of market power downstream from suppliers to customers. Now, every company of any scale and in any sector wants to be closer to its customers, to understand them more deeply, and to tailor their products and services to serve them more precisely.