Well, this was certainly an entertaining jaunt into the muddy waters of what an author can do with a story, with a book and with a text.
I enjoyed the thriller/horror aspects of the story, which I felt were just enough to evoke the genre without any of the voyeuristic attitudes that horror sometimes seems to possess. And I thought the shark was a brilliant move.
The characters seemed flat sometimes, though whether that was a deliberate homage to the genre remains impossible to tell, since so much in this book is a deliberate homage.
And the ending, which I know has its detractors, I found to be pith perfect.