Marco.org

Via gtmcknight:

Take a picture and it automatically sends it to a stranger, and you get one in return. There is a lot of crap pictures, but the good ones make it worth it. I was swapping with people in Japan last night!

See also: Flickr group for Photoswap (using the iPhone screenshot feature of pressing the power and main button quickly together)

Goodbye, Tumblr productivity for an hour.