BookHopper is a UK organized book exchange website. One feature of BookHopper is that a BookHopp is neither a swap nor a trade; it is simply an agreement by one bookhopper to send some other bookhopper a book from their bookshelf when requested. The bookhop will generally happen through the mail; however bookhoppers can organize to meet face to face if they wish.

In return for sending books, the sender gets the true to request any books from some other bookhopper's bookshelves. Both bookhopper lists the books that they have obtainable on their virtual "bookshelf" from which other bookhoppers can after that search, browse and choose. When a book is chosen, the sender is informed by email, and the book is packaged up and sent off.

If the book is sent in the mail at that time the sender pays the postage. This baffles some people in that they believe that you shouldn't have to pay to provide someone else a book. What the sender is receiving is not that much monetary, however the right to request books in the future.