The Amazon Kindle can be credited for a large part of making the eReader market what it is today. After the Kindle became so popular, new readers started popping up in droves. Amazon recently unveiled its financial info for Q4 2009.
The company still won't say exactly how many of the Kindle readers it sold. As close as we get to know how well the Kindle is selling is a vague statement from Jeff Bezos stating, "Millions of people now own Kindles."
I don't get why Amazon won't say how many it sells. It's not like not saying anything will keep other products from coming to the market. I also expect the iPad to give the Kindle a serious challenge and the numbers may change.