My house has no shortage of books I'd like to clear out this spring. That's why Better World Books' online buyback program caught my attention. Enter your book information, get a price quote and print pre-paid shipping labels on the company's Web site. Selling your books this way keeps them in use and out of landfills. Better World Books estimates they have saved approximately 20 million pounds of books from the landfill so far. A percentage of the company's revenues goes to literacy initiatives around the world.