what kind of emergency warrants such an action? when the towers fell, the internet was like a swarm of bees, but that was mostly people trying to find out what was going on, if they didnt have a tv, or a radio for details. i think it would be pretty stupid to shut down the largest, fastest source of information, when information is exactly what people need, in a situation like that. mind boggling.
Also, when testing this "counter measure" for whatever reason. wouldn't a nation wide shut down lose millions of companies and retailers countless dollars, further crapping on the already disgraceful economical situation? In ten minutes, sites like ebay, would lose millions (guesstimication).
idk, maybe it's out of the bounds that my inferior logic can understand. or it's just a dumb*** idea. one of the two.