The book largely seems like an indictment of reality TV. Let's hope that eventually people are not killing and being killed for the sake of one's 15 minutes.
The structure of the novel is interesting. It is a novel about writers who are writing short stories throughout the novel. Every other chapter is a short story "written" by one of the characters. Really, the stories are confessions from each one's past.
The short stories are far more interesting than the novel proper. No less unbelievable, but very memorable.
While Haunted is vastly different from Choke (and one of Palahniuk's more minor novels) I'd say I did draw one more conclusion about the author's style.
He has a talent for making the most far-fetched idea seem, at least, plausible.