http://www.ananova.com/why-all-sites-go-down/

Amazon averages sales of $117,882 per minute. I’ll let you think about that number for a second. That’s a good deal of cash, so it might not have mattered much that Amazon recently lost around $4.72 million when Amazon’s site went down for 40 minutes this past Monday. But for companies that aren’t as big as Amazon, 40 minutes offline is a big deal.