Kill the Internet?

When turmoil broke out in Egypt the government pulled the plug on the Internet. In China the government censors what sites people can see. Here in the US there is a bill granting President Obama the authority to shut down the Internet within the United States in the event of a cyber-attack. The Bill, an amendment to the Homeland Security Act of 2002, was tabled in December and is being re-introduced by senators Joseph Lieberman and Susan Collins. Of course there is lots of talk about how it would only be used in appropriately (in case of attack) but do you really want to believe that. Once a mechanism is in place it is easy to use it and then make excuses for why you did. Can you think of the ramifications of having the Internet down for even one day?