The Merchant of Death - D.J. MacHale
I really enjoyed this. The idea was pretty imaginative and (aside from some things that were rather cliche) original. At first I really didn't like Bobby, but he really grew on me (and grew as a character in general). Near the middle and the end, things really got catching and everything was very very intense. The ending is really satisfying and gets you wanting to read the next one.

The only thing that bothers me a LITTLE is that Bobby probably would not have written those journals as detailed and as "prosey" as he did. But I would not have liked to read his experiences through vague telling. So yeah, I'm glad at how that worked. SPEAKING of that actually, that is a very interesting way to tell a story. It was a really, really neat idea. I can't wait to read the next! :D