Senator Joe Lieberman, chairman of the Senate Homeland Security Committee, has called for banning al Qaeda from the Internet. Or at least from YouTube. (Isn’t that the same thing?) It’s an endearing, “bless his heart” kind of moment. We all support the senator’s noble effort to fight al Qaeda … even as most of us are amazed at his lack of understanding of how the Internet works. Perhaps he should call Chinese Premier Wen Jiabao and ask him how China’s efforts to ban the Internet have worked out.