When you finding for the sites like Behance? Then, Dribbble is one of the services, which will show and tell community for designers. It is the place, where already huge communities of users are already sharing screenshots of their task.
Here, it is the place as Behance to show everyone all things that you have created and tell them about it all. Dibble is free, but you need an invitation from an existing community member to upload screenshots or to post comments. The portal also has a job board, an online stores and active meet up groups around the world.