I came across this site today: http://eput.com/
It's in Chinese - but try clicking the bottom link in the middle, and scroll down. If you're familiar with 500px, they've actually copied the actual JS and CSS of our Flow, right down to the assets and animation keyframes. If you manage to sign up, their photo page, all their buttons, is copied from ours.
I'm actually not even mad. It's cool to see that someone wanted to copy us. But nonetheless - screw these guys. I thought you guys would find this interesting.