Amazon.com

I just want to put in a plug for selling your old books on amazon.com's marketplace. The only thing you have to enter is the ISBC number. Last year I cleaned out my books, and sold about $150 worth. I recently cleaned my shelves, again, and have already made $80. Textbooks tend to sell quicker than fiction. Amazon does take a commission, but it's worth it when I do so little to sell them. Love it!!