No, this isn't about clearing out your garden for fall. It's just a tidbit about what to do with books that you weed from your collections. I found this useful resource and just wanted to pass it on.
This list was compiled by an individual in Colorado, and is dated March 2008, but the organizations that will take or exchange used books are mostly "evergreen" ones (so to speak) so the list should be good for some time.
Most of us hate to throw books away, so it's nice to know of some groups that will use them or help you pass them on -- some even share profits with the donating library. Worth a look!