There was once one in the Coupon Connection - I remember trading Walter Kirn's Up in the Air & the book Coffee, Tea, or Me & Chicken Soup for the Traveler's Soul - a long time ago. Folks signed the inside of the book before mailing them onto other FTers. Not sure what happened with that thread & the books. I'm guessing people 1) Lost interest OR 2) Got lazy with spending the money to mail book.

Still, it's a good idea. I like how the AS lounges in SEA have book exchanges & think it'd be a good idea for airports. I definitely used the Read & Return programs at airport stores when I was traveling weekly.