As a startup, you can’t afford to reach everyone so you have to find the people who will be your most productive customers and keep them coming back. Today’s technology allows us to track everything. For a business this is an amazing and powerful thing. You can post something online and see who looked at it, where they came from and what they care about. You can send an email with different subject lines and see which one sticks. The options are endless. Your job is to set goals for everything you do; that way you know whether something was successful or not and it’s not a guessing game. It will help you focus you resources and build loyalty with your customers. The more you measure, the leaner and more productive you will be as a growing business.