Argh, I was just informed (by two different bookstores, nonetheless) that my email is bouncing certain messages and they can't get through. Luckily, one bookstore had my phone number and was able to get me the message. But this is troubling, as I'm getting steady email so I don't know how to figure out where the problem lies.
Anyway, if you've emailed me and I haven't replied, this would be why. Post a message to either my MySpace account or my LiveJournal page to reach me in the meantime.