Other Art Venues

So obviously I spend a lot of time on Etsy. I made a brief stab at a store there before I realized I am much too lazy for all that. I shop there when I actually have the cash, and I browse there a whole whole lot. I'm comfortable with Etsy. I already have an account there and understand how the funked up system works, for better or for worse.

But there is a whole world of art venues online out there. Where should I start looking next? I'm not through combing through the shops on Etsy for great artists by a long shot, but I want to expand my horizons.

So as a buyer/browser/artsy blog curator where should I start looking next? What sites do you like?