I’ve just discovered the brilliant photo website 500px and thought I should share.
Basically it’s a photo sharing site and so superficially it’s not that different to Flickr. However, unlike Flickr the emphasis is not on the community aspect of sharing photographs with comments and groups but rather on the quality of the photographs posted. Therefore photographs are distilled based on how many times they are viewed and how many people like them, with the cream of the crop floating to the top. This has the simple result of making the site far easier to browse for good quality photographs.
There are various ways to browse the good work on flickr, with my favourite being ffffl*ckr, and so far I have hadn’t used 500px particularly extensively, but so far it has impressed.