The book is well-worn from lots of reading it appears, but I'm pretty sure nothing is against PBS guidelines. It has a visible crease on the front cover and the whole book is bent a little, like someone bent back the "read pages" while they read it. Nothing is ripped, it's just bent. I have it listed as an unpostable right now, but if enough people assure me it's postable, I'll go ahead and post it. I wouldn't list it as an RWAP, but I'm nervous someone else might.

It sounds postable unless you think it falls under the "excessively worn" category which is really your call.  I do know that creases on the book cover do not make a book unpostable.

I don't know it sound borderline.  If it were WL I  would offer it in the book bazaar.  If it's not WL then I would offer it as a freebie.

sounds postable to me.

I rather play it safe than sorry so anything that makes me wonder like that I put in my unpostable pile. Your so great for asking about, some people wouldn't think twice about posting any kind of book at all!

A lot of paperbacks get that 'curve' after being read a few times, it is the nature of a used paperback book.  This is a site for used books called 'paperback swap.'  Your book is within guidelines.  If that is all that is wrong with it, anyone who had a problem would be themselves in the wrong.