Amazon's Kindle Store now includes over 390,000 books, and the company announced that on Christmas Day, customers purchased more Kindle books than physical books. On Amazon's peak day, December 14, 2009, customers ordered over 9.5 million items worldwide, which is a record for the company.

Over the holidays, Amazon shipped to over 178 countries, and on the peak day this season, Amazon's worldwide fulfillment network shipped over 7 million units.

Amazon.com's bestsellers based on units ordered from November 15 through December 19 included the following:

• Electronics: Kindle Wireless Reading Device; Apple iPod touch 8 GB; and Garmin nuvi 260W 4.3-inch GPS
• Toys: Scrabble Slam Cards; The Settlers of Catan; and Scene It? Twilight Deluxe Edition
• Video Games and Hardware: Wii Fit Plus with Balance Board; New Super Mario Bros; and Call of Duty: Modern Warfare 2
• Sports & Outdoors: Razor A Kick Scooter; Victorinox Swiss Army Champion Plus Pocket Knife; and P90X Extreme Home Fitness Workout Program
• DVD: "Harry Potter and the Half-Blood Prince;" "Star Trek;" and "Up"
• Books: "Going Rogue" by Sarah Palin; "The Lost Symbol" by Dan Brown; and "The Help" by Kathryn Stockett

Amazon also made available its best sellers for the year (January 1, 2009 to December 22, 2009), available on the Amazon.com press release page