500px.com is a really pleasant change from the usual suspects. Its expensive to upgrade and I dont think you get to sell from there (a la smugmug, zenfolio, redbubble) but the presentation is just really nice, and upgrading for $50 p/a gets you a few extras that the free service does not.
I’m posting about it because I have joined. I may go “Awesome” when my current flickr subscription expires… but I took two years so it will be a while.
My 500px page