iChapters: Buy an eBook, Plant a Tree

UPDATE: They've planted a tree 'in my honor'. :)

You may have heard of Eco-Libris, the site that plants a tree for every book you buy. iChapters has a similar program, but it may be even greener.

The program
Unlike Eco-Libris, at iChapters, you buy e-books, instead of funky old fashioned paper books. iChapters sells print textbooks as well, but we all know that buying print textbooks is out of fashion.

The books are extra cheap because the site sells directly to students; books are 40 to 50% off.

The green
For every eChapter or eBook purchased, one tree will be planted. So far, 24,000 trees have been planted.

The drive also has a Facebook page; Prizes include a cash prize for purchases on iChapters, a free pass for one year to all U.S. National Parks, and more.