DA is a really interesting proxy - It's a pretty large market. I'm a RISD grad and can imagine TONS of my classmates using this. ETSY = Craft Majors, EveryArt = Painting, Illustration, Sculpture.
This is going to be huge, Best of luck!
FWIW I took notes on a panel that the DA founder gave at ComicCon last year.
Wasn't this essentially happening less officially through Deviant Art?