Is it possible to locate a man, given only his photograph and first name?
A UK games company is testing the power of the Internet by asking that very question; they have recruited one of Earth's 6 billion residents - a man named Satoshi - to participate in this experiment.
We are each only five to seven people away from any target in the world. Someone, somewhere, knows Satoshi - so we must track these people, and thus Satoshi, down using word-of-mouth communication. People from over 80 countries are already participating in the hunt, with more joining every day.