Yes, there are a whole bunch of us here that use it.
Make sure you read the Book Condition Guidelines so you can send out the right quality books, and also make sure you receive the right quality back. It can get bummy when you have either received a book that is barely sticking together, or get a PM stating your book didn't meet the conditions and you have to return the credit.
However, if you are able to get great books at from your library that are on people's Wish Lists, you can always get a credit for another book.
I use the site mostly for old or rare books that I would never be able to find at used bookstores or garage sales or at old library sales.
I have had people send me these rare books in like new, to brand new - maybe flipped through once, hard covers.

I've gotten many Keeper quality books, and I didn't even request them in that condition.
The site has been invaluable to me.
