Internet's largest retailer Amazon.com said that for the first time sales of electronics surpassed the sales of books on its Web site. During that weekend 2.8 mln units were ordered within a single day, or 1 item was sold every 32 seconds. During the busiest hour, Amazon received 700,000 unique visitors to the site.
I think they did the math wrong - 2.8M per day is 32 items ordered per second. That's a lot of orders. (The link to the news story has it right.)