The book is question is a good-as-new copy of Terry Pratchett's discworld book 'Guards! Guards!'. As usual, it comes registered with BookCrossing, the free service where you can track a book's travels (you do not need be registered to enter this giveaway, or leave a journal entry on BC)
In honour of the Armchair BEA, this giveaway is international and will last for the duration that I'm participating in the event (i.e. until I wake up on Saturday morning). You do not have to be a follower, or leave a comment to enter this giveaway (although both would be appreciated).