I'm frankly surprised that it won the 2009 Nebula for Best Novel. The only really sfnal bit is the narrator's power of precognition, which isn't actually of any use to him and doesn't make much difference to the plot except to tell us when we have reached the end. There's also a cartooney villain who exits the story rather unsatisfactorily. I would put this down as good but minor Le Guin.
The other novels nominated that year were: Little Brother, by Cory Doctorow; Cauldron, by Jack McDevitt; Brasyl, by Ian McDonald; Making Money, by Terry Pratchett; and Superpowers, by David J. Schwartz. I have to say that of the four I have read from that list, Brasyl stands out by a long way as the obviously deserving winner. The McDevitt is on my shelf; I don't think I have heard anything about Superpowers. It's a good illustration of why the Nebula system so desperately needed to be changed (as I think happened the following year).