A really great story published on the Flickr Blog the other day.
As it turns out, some one lost a camera, some one found the camera, and then someone went to great lengths to return the camera. After turning the camera into police, and they not finding the owner, they gave it to the person that found it. So the woman that found it posted a few of the photos online and asked for help in figuring out who owned it. After some expert sleuthing, the owners were found and the camera returned.