500px is Photography Some of you may of heard of it already, but it's a new photo-sharing site. I've just signed up, and what drew me to it was the UI: it's all about the photos (and it's what Flickr should be). It seems to be pretty stable so far, despite them getting a lot of traffic, and they do emphasise that you upload only your best shots. Minor quirks are the Flash uploader, which can be a bit buggy, but it seems like a great alternative to Flickr. (and from a business perspective, they have a revenue model, which is always a plus).