Extract: "Joseph Bonicioli mostly uses the same internet you and I do. He pays a service provider a monthly fee to get him online. But to talk to his friends and neighbors in Athens, Greece, he's also got something much weirder and more interesting: a private, parallel internet. He and his fellow Athenians built it. They did so by linking up a set of rooftop wifi antennas to create a "mesh," a sort of bucket brigade that can pass along data and signals. It's actually faster than the Net we pay for: Data travels through the mesh at no less than 14 megabits a second, and up to 150 Mbs a second, about 30 times faster than the commercial pipeline I get at home. Bonicioli and the others can send messages, video chat, and trade huge files without ever appearing on the regular internet. (...) Anyone can join for free by installing some equipment. "It's like a whole other web," Bonicioli told me recently."