I finally received my complimentary copy of Greasemonkey Hacks. I'm also glad to see that my saved searches user script was selected as one of the sample ones. Reading the contributors section was somewhat amusing due to the homogeneity of the entries (e.g. more than half mentioned blogs). The book is also already out of date, with Greasemonkey and Firefox both having undergone major releases. I also doubt the wisdom of printing the full code behind each hack - especially some of the longer ones that were already online. Commentary attached to interesting snippets might have worked better. However, as a whole the book seems very well put together and it brought to attention some scripts I hadn't heard of before.
As a side note, I realize that with the recent release of Firefox 1.5 and Greasemonkey 0.6.4 most of my user scripts have suffered some code rot. I hope to bring everything up to date in the next few days.