When we relocated from Oklahoma City to Abilene, Texas, my kids were unhappy to leave their friends and teachers. My daughter, for instance, loved the lessons given by her violin teacher Dr. Hong Zhu. We decided to use Skype to continue the lessons, which seemed a wild idea for music lessons. We just wanted to give it a try and see what would happen. One and a half years later, the lessons continue, and my daughter has become one of the top players among her peers in the city, the “queen of violin” as nicknamed by some of her classmates. You see, Skype is not simply for showing dogs dancing on carpets. It creates a classroom in the air. The same is true for many other types of consumer technologies.