I really enjoyed it, it's seriously effed up like all his work is, but it's possibly the most effed up of all his books I think. I have enjoyed all his books up to and sadly not including the non fiction collection he put out a little while back, which bored me to tears. Haven't read Haunted yet.
I attended a reading when he was promoting Diary and he didn't read from the book but instead read a short story he'd written, called Guts. The London date was the ONLY one on his tour where nobody had to leave the room/fainted/threw up. Fun.
Nothing precious, plain to see, don't make a fuss over me. Not loud, not soft, but somewhere inbetween. Say sorry, just let it be the word you mean.