Staff at the Amazon Swansea fulfillment center process orders as they prepare for what is expected to be their busiest Christmas on record on Nov. 26, in Swansea, Wales. The 800,000 square foot fulfillment center, the largest of Amazon's six in the United Kingdom and one of the largest in the world, is gearing up for 'Cyber Monday', which is Dec. 6, and is predicted to be the busiest online shopping day of the year. In 2009, Cyber Monday saw 2 million orders received at a rate of 23 orders per second.