Retaining customers can be a viable strategy as some estimates value existing customers 5xs more than new customers. The cost of retaining a customer is 1/4th that of obtaining a new one.
Simmerman, 1993 showed companies will boost profits 100% by retaining existing customers.
Customer Life Cycle
- Acquisition: Prospect -> customer; high cost.
 - Retention: Keep them; 1/4 acquisition cost.
 - Attrition: Customer enthusiasm fades, and dissatisfaction creeps in.
- Over 60% of dissatisfied customers are so tired of poor service but find it useless to complain.
 
 - Defection: Losing the customer.
 - Reacquisition: regain the customer at a higher cost.
 
Types of Customers
- Apostle: net favorable, happy; will help troubleshoot and are your best source of new product ideas.
 - Unhappy customer: a customer you are in danger of losing due to poor service.
 - Defector: a customer who has been lost.
 - Terrorist: actively and broadly spread bad messages.
 
Customer Retention
- A customer-driven company must meet the needs of the customer.
 - Must understand the customer via product analysis or service performance.
 - Cost reductions may be part of the equation, but is not always necessary.
 
