Dribbble is a finely crafted community for designers, by designers. It’s invite-only in order to maintain high quality work on the site, but that doesn’t mean you can’t browse around for inspiration. Give it enough time to fine-tune the tagging and search features (color search is already there; UI patterns, textures, etc. would be great) and we may have the most useful, A-grade design reference out there from people who know their stuff.
There are several things that set it apart from generic portfolio and gallery sites, as it is also dubbed the “Twitter for designers”. From the tagline “what are you working on?” to its system of “rebounds” (basically a response to a “shot”) to uploads of 400 pixels or less, Dribbble is focused on brevity and the right now even when they could have entertained the whole spectrum.
Of course there’s the basketball metaphor working all around too, which when expanded even further can create some interesting activities and interactions for the community: think games, collaborations, meetups, leagues, merits. Think social games like Foursquare and BarStar, only more productive.
People have been complaining about the quality of a lot of things in the design community lately, whether it’s resource articles or the actual interactions within the community, and I see Dribbble as a partial solution to that.