Have any of you checked out 500px? It's like flickr with much better layout and very great photo voting system. You can vote Like or Dislike any photo you see, and the resulted "Popular" images are all stunning!
I'm very excited about the site and just opened a free account. I'll consider canceling my flickr membership and go premium on 500px in a few months. What it lacks right now is a feature like flickr's groups.
I don't have any photo uploaded yet, but my account is 500px.com/busygirl if you want to open one and follow me.