Bootstrapper.com - Confessions of Serial Entrepreneurs

So what’s your best new customer? An old customer. Why? Because you already know something about them and they already trust you (hopefully). It is important to always be marketing to your existing and past customers. Having a Customer Relationship Management (CRM) System is essential to understanding who buys your crap. Then you can do marketing to individuals and personalize marketing to their interests. You know a lot more about a past customer than a potential new customer and its generally a lot easier to get people who’ve bought in the past to buy again instead of getting people to buy for the first time.