Fascinating concept, loads of imagination, lots of wonderful ideas, good writing, some vaguely amusing lines, a plot ... everything that needs to be there was there.
Except that it just didn't work for me. It was slightly better than The Graveyard Book, but I had the same problems with this one - I just didn't care for any of the characters. Whether they died or lived or achieved their aims... Couldn't care less. *shrugs*
Also, I'm starting to realise I really do have a deep dislike for books with too many dreams, visions and stuff going on inside the mind in them.