Amazon doubles their profit in the last quarter. I think my spending on Amazon more the quadrupled last quarter on Amazon comparing to 4Q 2006. :p

But I didn't see a detailed break down of the performance of Kindle. Is it possible to find it in some supplementary materials to the 10Q? :blink:

No hard numbers, but a quote from the earnings call transcript (http://seekingalpha.com/article/62375-amazon-com-q4-2007-earnings-call-transcript?source=homepage_transcripts_sidebar&page=5):

[CEO Jeffrey P. Bezos] Yeah, Kindle is, in terms of demand, is outpacing our expectations, which is certainly something that we are very grateful for. It's also on the manufacturing side causing us to scramble. We're working very hard to increase the number of units that we can build and supply per week, so that we can get back -- our goal is to get into a situation as quickly as we can where when you order a Kindle, we ship it immediately. That's the standard we want to hold ourselves to and we are working very hard to get there. We are super-excited by the very strong demand.