Internet addiction has been a big headache in South Korea for several years, where 90 percent of homes connect to cheap, high-speed broadband. Many young Koreans’ social lives revolve around the “PC bang,” dimly lit internet parlors that sit on practically every street corner. A government study estimates that up to 30 percent of South Koreans younger than 18 are at risk of internet addiction. Many already exhibit signs of actual addiction, including an inability to stop themselves from using computers, rising levels of tolerance that drive them to seek ever-longer sessions online, and withdrawal symptoms such as anger and craving when they can’t log on. Some users have literally dropped dead from exhaustion after playing online games for days on end. How big a problem is internet addiction here in the United States? Should parents and educators actively police how much time kids spend online, or if they do so are they preventing young people from interacting with their peers in the ways they want?