Time magazine has a good piece on Seoul, the world's most wired city. I lived in Seoul from 2000 to 2004 where I really learned that most behaviors related to technology usage are not culturally bound but dependent on the availability and ubiquity of technology. Some of my thoughts are in an old piece, "Where Technology Is Ubiquitous, Opportunity Abounds."
"Seoul: World's Most Wired Megacity Gets More So" TIME
"Wired Seoul" (photo essay)
The systems ensure that the city's 20 million residents live within one giant hot spot, where wireless access is available from almost anywhere for a small fee.