How very dare you!
In the words of Catherine Tate's character - I was a bit peeved to see that someone with whom I'd done a bookswap with, when declaring the book's condition to swap it again, stated that
'The only real minus point is that a previous owner has obviously removed a sticker from the inside front cover.'
Yes, pal, that was you!
Like most, but not all, books that pass my way, do get registered with BookCrossing, and I always state the registration and, if there is a label inside, in the book description/condition. I just can't understand why, if someone is going to pass the book on anyway, would want to remove a BookCrossing label - I mean, it's easier and less destructive just to leave it alone, and maybe the next person to receive the book might just enjoy knowing about BookCrossing to further their literary enjoyment.
Am I bovvered? - yes, just a bit when it's counter-productive to all.