Today 200 bloggers take a stand to support books printed in an eco-friendly manner by simultaneously publishing reviews of 200 books printed on recycled or FSC-certified paper. By turning a spotlight on books printed using eco- friendly paper, we hope to raise the awareness of book buyers and encourage everyone to take the environment into consideration when purchasing books…

A great review that does not give the story away:

http://shereadsandreads.blogspot.com/2010/11/green-books-campaign-review-find-by.html