tries to cover too much
This book has some good information, but it tries to cover too much. It covers web services created in .NET, Java, and even Perl. Most of the book is related to .NET though.
It is funny that in the intro the authors say they assume you already know XML, but then the first chapter is an intro to XML. Actually, that's one of the reasons I bought the book though. I didn't want to buy a separate XML book.
The other reason I bought the book is that it was on the bargain rack. I wouldn't have paid full price since I am not interested in .NET.