Dribbble is a beautiful service where many diverse kind of service providers are gathering. We from Codeboxr also released couple of products to showcase Dribbble items (they call it shots over there) which are called: Dribbble Shots Enhanced and Dribbble Shots Display.
The people at 4MulaDesign.com has created a lovely HTML 5 interactive infographics featuring Dribbble and give us the info as to the use and user base of this fantastic service.
What is interesting from this infographic is that not only designers and creative people who are using it but all sorts of people including developers and typographers are also using.
As for usage: the core use is geared towards community, receiving or giving feedback and obtaining insights.
Check it out here: