This article compares a community of Visual Designers (the ones you find on Dribbble) with 2 specific UX people. A better comparison would be Dribbble vs IXDA,

This article compares a community of Visual Designers (the ones you find on Dribbble) with 2 specific UX people. A better comparison would be Dribbble vs IXDA, community vs community, one with the focus on form vs the other with focus on function. If you look at it that way, the signal to noise ratio is honestly about the same in each community. A couple gems here and there, but 90% of the stuff I see or read on both don't seem to be solving anything.