The Intergovernmental Panel on Climate Change said "In the long term, a sustainable forest management strategy aimed at maintaining or increasing forest carbon stocks, while producing an annual sustained yield of timber, fibre or energy from the forest, will generate the largest sustained mitigation benefit".
http://www.ipcc.ch/pdf/assessment-report/ar4/wg3/ar4-wg3-cha...
I've got a Kindle but I wouldn't trade my hardcover GEB for an electronic version.
77% of tree usage in the US is for timber and pulpwood. Fast-growing species are planted and harvested over a 10-20 year cycle so that as each section is cut down and replanted, another section is maturing. It's both sustainable business and an effective CO2 sink.
If you want a citation for growing trees for timber and pulp as an effective CO2 sink, the citation is right in the grandfather post (an international climate change study by the IPCC including researchers from over a dozen countries, how much more authoritative can we get?), or just look up the paper and timber industries on wikipedia.
Less importantly, I can hold the nook with one hand and still be able to turn pages. I travel by bus, so this is useful to me - my other hand can hold a coffee ;)
It's a scan with OCR. Unfortunately the OCR is bad on many parts of the page - random occurences of %, ' and other characters are common. Also some words are totally unreadable.
Overall, I still read sometimes on the iPad, but having to go back to the hardcover if I'm totally lost.
Oh well, one more dead tree won't hurt anyone.