Where do you sell your textbooks?

I usually buy off of amazon. Since most of my classes are technical in nature now, I usually end up keeping them for future reference.

but where do you end up selling ur used books? I have a few used textbooks that i don't need and the university bookstore is giving me nothing for them.. :( and selling it privately means i need to put up posters all across campus..

I highly suggest http://half.com

I've sold many books using it. I usually don't buy textbooks unless I have to. My university library provides course reserved textbook rentals for free so anytime I need a book I just go to the library and study.

Amazon.

http://isbn.nu