Online retailer Amazon.com recently announced that Wii systems were among its top-selling items in 2007, and sales of the console helped make the year its most profitable one to date. Amazon said it sold about 17 Wiis per second when the product was in stock. Additionally, the retailer noted that along with Wii sales, its best-selling video games, Super Mario Galaxy and Call of Duty 4: Modern Warfare, were top sellers in its entire video games and hardware division. In PCs, the top sellers included Apple MacBook, Nokia Internet Tablet PC and HP Pavilion Entertainment Notebook PC, Amazon also highlighted. The strongest day of holiday sales for Amazon was December 10th, on which customers ordered 62.5 items pers second for a total of 5.4 million items. On its peak shipping day, the retailer shipped products internationally to more than 200 countries, moving more than 3.9 million shipments.