There is certainly some fantastic designers on Dribbble, and examples of work on Dribbble that focuses on non visual design layers, (thanks for the examples DC Townson and Alex). But they are the exception. In most cases, a popular Dribbble portfolio is simply evidence that you are expert with graphics software, that you understand current visual design trends, and in some cases that you are good at one of the four layers of design. But there is no causality between Dribbble popularity and shipping great design work.Paul Adams.