If you are reading this blog entry, you probably read books and most likely you own books. If you are like me, you own too many books. Books use paper. According to the statistics at the website Eco-Libris the number of books printed in the US each year mean that 20 million trees are cut down each year (they base this statistic on three years worth of data).
If you find the statistic appalling, Eco-Libris has a solution. They have a program that allows you to plant a tree for every book you read, thus allowing you to read responsibly.