If you are looking to get rid of things around the house, these places are the easiest places to use.

 

Paper Back Swap

This is a place for only books. I use this for my books that I am not able to sell for over two dollars.  You list a book, and when someone request it, you mail it to them. In return you get a book point. A book point is good for one book. You can then request a book for yourself. There are millions of books listed so it is easy to find books that are expensive or hard to find.  After you sign up and list at least 9 books, you get 3 books right away.