I signed up for that Amazon Associates thing a long time ago and put a link up on the sidebar and forgot all about the whole thing. Since so many people do it, I didn't think I'd ever see much, if any money from the whole thing.
But when I checked my email today, there was a gift certificate that was enough to do something with! So thanks to the kind person(s) who ordered stuff here. I've tucked the money away to use when this book becomes available.