I enjoyed this much more than Fforde's previous TN novel, One of our Thursdays is Missing, I especially liked: the focus on Thursday's family, Fforde's take on librarians and library services (as an ex-librarian, I really appreciated this), the culmination of the Jenny-is-a-mindworm/Aornis story arc and the usual puns and in-jokes, several of which made me groan and one that still makes me giggle when I think of it.
Now looking forward to TN8: Dark Reading Matter.