The StrikeIron BetterBookBuyer is a sample rich client application that demonstrates how a Windows-based software application can utilize XML-based Web services from different commercial Web sites in a useful way. In this case, Amazon Web services are used as the basis for a graphically-driven book price comparison application, allowing the user to search for books based on keyword, author, or title, and then also do simultaneous price comparisons against Barnes & Noble, Books-A-Million, Half.com, etc. A great tool for the desktop.