One Memento, capture one photo forever laughingsquid (Laughing Squid)

One Memento is a photo app that turns digital photography on its head by allowing the photographer just one shot. When the user takes their photo it will be uploaded for posterity to an online gallery that is capped at 250,000 photos. Created by Robot Corp of London, One Memento is available now as a free iPhone app.

Interesting concept.