I have been on a mean streak lately, reading as many bad reviews as I could, and this book in particular has generated a whole pile of really amusing ones. I read the bad reviews, and then I read the book anyway. I didn't find it too heinously awful. I mean, sure -- the plot is not stunningly original, there are strained metaphors that are physically painful, and the "witty banter" could have been cut back by about 50% without losing anything. But the world and characters (particularly Jace) were interesting enough to keep me reading. 
 My biggest complaint is the witty banter, absurdly enough. I like a bit of wit as much as the next gal, but I swear there are scenes in this that ONLY exist to set up the laffs. You can see them coming a mile away, and then there are like, six jokes in a row where one would do, honestly. There was at least one scene where it made me really cross, because there is NO WAY they should have had the wherewithal (to say nothing of the TIME) to crack that wise when they were in that much danger. 
 Still, I started three books at the same time -- The Dark Divine, Rampant, and this one -- and this is the only one of the three I could bear to finish. That's saying something. I didn't find Jace that hot, but I found him interesting - which is better than hot, frankly. He really carried the book. 
 I'd probably look up the rest of the series.