I'm writing a book on Web services. It should be out later this year, most likely in the fall. Let me know what you want me to discuss in it. Currently, I am focusing the book on the senior developer / architect. As a result the book is more theory than code, although I have tons of code in it. It seems like lot's of books are focused on a specific technology, and I certainly am focused on .NET in the book for examples. But I wanted to abstract the concepts when I could.