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TALLINN, Estonia

Population > 399,000

Leading indicator > 58% of residents use the Internet, with the cheapest connection rates in Europe

Fast companies > MicroLink; Skype; Delfi

The capital of Estonia, as it's known, is the most connected city in Europe. There are no Internet cafés, because wireless service is everywhere and mostly free. (Universal Net access is actually guaranteed by Parliament.) Wi-Fi is free on commuter trains, and drivers pay parking fees by text message. Cyberattacks may happen, but the place radiates a switched-on vibe--an ease with and saturation of technology, and an abundance of youth.