I received a WL book today that open to a certain page (I know this is okay), but you can see through to the spine/binding. Is this okay?

Also, can you please give me a definition of a cleaved spine? I couldn't find anything about cleaved spines in the Help Center. I thought I once read about it there, but looked & looked and never saw anything about it.

Thanks!

What you have is, I believe, the very definition of a cleaved spine.  When the spine no longer holds the pages together at some point, so that the left "half" isn't touching the right "half" when opened to that point, the spine is cleaved inside.   Cleaving usually occurs when the separation is forced by the book having been opened too widely.  Often this leaves only the outer cover holding the two portions of "book" together.  This is not to be confused with instances where the spine is actually solidly intact but there happens to be a gap between the place where the pages have been attached to the spine, which is a publishing defect.  This occurance seems to be rare, though on the increase. 

The Help Center refers to cleaving without calling it such, in these lines (the underlining is mine):

Binding:

• Must be intact, with no separation on the inside or outside of the book

While the book opening to a certain page is acceptable, if the pages at that point separate from each other then the book is unpostable.  I think you should mark the book RWP as well as send a message to PBS via the Contact Us link and ask to be placed back at the front of the Wish List line.

Just dittoing what James said.  They did used to have "cleaved" in the condition guidelines, but it was confusing, so they removed it.

There are some good photos of different types of spine damage here, if it helps: http://www.mywingsbooks.com/coll-terms/spn_.shtml

Cheers,
Catt