When are you going to write a book, Bonnie? Serious question. You have the knowledge and you have a nice writing style. MIke, I agree that Bonnie would make a great author, no question about it. She knows the technology and has a keen eye (and unlike others, knows when NOT to interject pure opinion) <s>
One thing - the economy has hit the publisher market as well. I can't speak for every publisher, but I know several that have scaled back on new book projects.
Writing a book is very difficult, and takes a substantial amount of time.
The truth of the matter is that Bonnie has probably contributed the equivalent of a book with her .NET posts going back the last 6-7 years.