This kind of silliness is being introduced by the man who described the internet "as a series of tubes":

Early in January, Stevens introduced Senate bill 49, which among other things, would require that any school or library that gets federal Internet subsidies would have to block access to interactive Web sites, including social networking sites, and possibly blogs as well. It appears that the definition of those sites is so vague that it could include sites such as Wikipedia, according to commentators. It would certainly ban MySpace.

Heck, it might well ban any site that allowed comments, and made it possible to leave your name attached to a comment. Would it be too hard to find Senators - or at least senatorial staff - who had so much as used a web browser?