Not long ago we were instructed to think of cyberspace— the digital realm that opens when you go online—as a territory of its own. But these days you don't hear much about cyberspace as a foreign country. Instead, as the Net becomes more and more geographically aware, we're using it to enhance our experiences in the realm of terra firma. The metaphor for this, as well as the potential center for such activity, is the literal mapping of our Earth, delivered piece by piece by piece to our screens—along with the location of the nearest pizzeria.
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