I know that they are allowed to be posted, but recently when I went to a library sale I noticed, only after I got home, that a lot of the books that I had purchased that were ex-library books (taken out of circulation) had the last flyleaf page ripped out. Now this is normally where those library pockets are for those cards that librarians used to use to mark when a book was due for return.

Does the fact that this last page has been ripped out make the books unpostable?

I would say that this book is postable, as long as the missing page is not a text page.

PBS guidelines:

• No torn or chewed/gnawed pages
  • yes, that does say "chewed/gnawed".  That means no pet-chewed (or human-chewed) books.
• No loose or missing text pages

Hi - this has been discussed in previous posts and I guess you can say is a gray area.  Many members do not consider the fly leaf as a text page, there for it is postable.  Personally, IMO I would post, but notify the requester and let them make the decision. 

I have sent some questionable books.  (Out of print and more beat up than I'd normally post.)  I select the last mail by date and send a polite PM saying I will mail the book if I do not hear from them by such date.  Be sure to offer to cancel if there is a WL, otherwise they lose their place in line.

Of course, I'm much more flexible about condition when I receive a hard to find book.  If it is a heavily posted book, then I'd not post it.

Thank you all for the replies, I am going to take the advice given here an post them and notify the person of the condition of the book and cancel if they do not wish it. :)