Kindle Fire Heats Up Holiday for Amazon

Amazon said this holiday season was the best ever for its Kindle, with more than four million Kindle devices sold in the month of December. The company also said that its new tablet, the $199 Kindle Fire, has become the best-selling and most-gifted product across all of Amazon.com since its introduction to the market 13 weeks ago. Amazon rarely releases unit sales numbers of its e-readers, but said earlier this month that it had sold more than one million Kindles a week for three consecutive weeks.