What if the Internet went down...and didn't come back up?

WHAT IF THE INTERNET WENT DOWN... AND DIDN'T COME BACK UP?
[SOURCE: NetworkWorld, AUTHOR: Lynn Greiner, CIO.com]
[Commentary] Imagine, if you will, a world with no Internet. No e-mail. No e-commerce. And no BlackBerrys. E-mail would be supplanted by snail mail; cell phones by land lines. Now imagine what the future would look like. Futurists say virtual business services of all sorts, accounting, payroll and even sales would come to a halt, as would many companies.
http://www.networkworld.com/news/2008/012208-internet-went-down.html