I’ve seen a few textbook trading sites on the Web, and then there are sites for swapping reading copies (Bookmooch, etc.), but nothing for book collectors. What I’d love to see is a site where people with modern firsts, and other rare books, can post what they have to trade, and list what they want. Is anyone aware of such a site? I’ll try contacting a few bibliophilic societies to see if they are aware of any. Stay tuned.