I registered a book (Piggy monk square) but it appeared twice on my page so got 2 BCIDs. Do you know how to delete one of them ?
Sure, here you go:
Q60: Somehow I registered the same book twice; how do I get rid of the extra book?
For the time being, BookCrossing has gone completely "green" with our BCIDs and we are not deleting any registered books from our data base. If you have inadvertently registered a book twice and it has two distinct BCIDs, please recycle the extra BCID for another book by editing the book details to reflect the information for the proper book. Then make sure you've labeled the correct book with the correct BCID, and you're on your way!