The above map of the world, drawn by Facebook data structuring intern using connections between 10 million Facebook friends ( full-size link ), is interesting enough in itself until you realize that all of the country borders are entirely drawn using Facebook friend connections too. Even if the world was dark and totally unmapped, Facebook could produce a remarkably good approximation of most of its continents’ boundaries, and even the borders of some countries. It still took some clever math.
Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe?
BitTorrent's been around for a whopping ten years, but it continues to evolve and remains one of the best file-sharing tools available.