There’s no question that new digital technologies allow marketers to approach customers with surgical precision, unlike the blunter instruments of just five years ago. But the rush to invest in new technologies designed to boost the return on investment (ROI) of a single purchase or channel often misses the foundational goal of knowing who your target customers are, what they’re worth to the firm and how they behave.

http://www.bain.com/publications/articles/customer-lifetime-value.aspx