Bruce: This law might work in China, but in the United States, most people are not used to having a high level of government oversight. Not only would most American teens object to this law, their parents would object too. Parents should be able to make the rules about what is appropriate for their families.
Another reason I think this law is a bad idea is that it most likely would require kids to disclose their real names, ages, and contact information. While I definitely worry about the government being able to monitor minors to this degree, I also worry about potentially dangerous situations if a hacker were to get this information, or if personal information were leaked. If our priority is protecting children and not possibly putting them in more danger, we should reject attempts to pass laws instituting time limits on online gaming.