Have a peek at my standalone site at art166.com
-- my portfolio includes photographs, photo-manipulations and digital work, including fractals. In the nine months I've been at FAA, I've sold all but fractals -- though I've seen many of those sell, too.
NOTE -- the user-friendly, standalone website is the primary feature of a Premium FAA membership.
FAA sells a hugely diverse variety of art. Here's a link to the 'Recently Sold' page:
Overall, I'd say POD sites have progressed beyond the days when digital art didn't sell as well as 'straight' photography or traditional art (paintings, drawings, etc.). That's been my experience, anyway.
These days, there's room -- and buyers -- for us all. Thank goodness!