NORTHAMPTON, ENGLAND - DECEMBER 18:  Amazon shipments in the packet and parcel section of the Royal Mail's Swan Valley mail centre on December 18, 2013 in Northampton, England. This Friday the 20th is the last day for first class mail for Christmas. This will be the first Christmas since privatisation, Royal Mail is also set to join the FTSE 100 only two months since its debut.  (Photo by Matthew Lloyd/Getty Images)