I learned about this site a few years ago and think it is really neat (and doesn't get enough hype).
ifoundyourcamera.net
It doesn't sound real, I know, but it is. It's a site that helps people find their missing cameras/memory cards through the photos found on them. A person finds a lonely digital camera, posts a photo or two on the site with an explanation of where the camera was found and then hopefully the owner sees it and claims the photos! I'm always looking to see if I know anyone in the photos but alas, nothing yet...
I'm glad the owner in the other post got their photo album returned to them but if they hadn't I would have suggested posting a photo to the site above.