Forensic Genealogy

The latest GAMES Magazine came today, and my eye snagged on an article about forensic genealogy. I don't quite get the origin of the name, because the site (http://www.forensicgenealogy.info) describes the art of puzzling out the details of an old photo from the visual clues it contains.

This seems interesting in its own right, but the site also features a weekly quiz in which readers try to identify the details of a given photo. Answers appear the next week, usually with a small lecture about the contents. 

I wish the guesses were done as a forum or comments. Right now, you enter your guess in the darkness, independently of your co-solvers. Still, the idea is pretty neat.