The Amazon Kindle is a compact device that uses e-ink display technology that doesn't consume power when displaying a static image. The act of reading a book generally involves long views of static images. As a result, the Kindle can achieve very long battery life when used for normal reading.
In a continuing trend to examine everything possible with a green magnifying glass, the Cleantech Group has recently released a report about the effective carbon footprint of Amazon's Kindle eReader. In particular, they compare the carbon footprint of the Kindle to the carbon footprint generated by reading the same amount of books on paper. Since the release of the Kindle, this question has been posed a number of times, but this is the first comprehensive report to take an at least somewhat rigorous approach to the problem.
Kevin O'Marah from AMR Research claims that Green IT receives a disproportionate amount of attention compared to other green initiatives. His blog has stirred some discussion in the office and here I'm weighing in on the topic. Understandably, Kevin's post was likely intended to stir up discussion, so I realize I'm playing into what the blog was likely designed to accomplish. (Oh, and try googling "carbon accounting" if you want to catch the hype curve.)