How Heavy Is the Internet?

An anonymous reader writes "Ever wondered how much the internet physically weighs? 498,438,559,990kg, according to CNET. To reach this figure, they added together public data on the weight of every computer, server and connecting cable. To this they added 6,075,000kg of iPhones, and over 6,800,000kg of Blackberries. Finally, they added the weight of 287,524 viruses and 85 billion+ webpages."