I like to think of it as Kozmo with a business model but then again, i'm also one of the founders and i guess we all know to well that being overly optimistic about your own startup is one the biggest weaknesses (strengths) of founders. But seriously, we do charge for deliveries, we worked hard on an algorithm that helps us determine the costs of a delivery based on historic data and most of us are engineers who are in love with the idea of solving big problems. ;)