They clutter your shelves, your coffee tables, your nightstands. But instead of tossing dog-eared, dust-collecting books in the trash, there are numerous "green" options for your old tomes.
In the United States, 30 million trees are used to make the 3 billion books sold each year -- that kind of guilt might drive a person to change their reading and recycling habits.
Call it spring cleaning your library.
Online book swaps have been growing in popularity and there are now several options,...Full Story