First, evaluate your existing customer list. Sort them by revenue from most to least. This is important because the people who spend most on your product or service, particularly if they repeat purchases, are demonstrating through their behavior that they value you the most. Don’t trust people’s words; trust their wallets. In other words, people can say how much they love you until they are blue in the face, but it is the action of spending money with you, or not spending money with you, that points to their true feelings.
