Web Services Security guide from Microsoft patterns & practices

p&p team just released a beta version of the "Improving Web Services Security" guide. Here is the link to Codeplex project where you can download the guide. This guide has the following four parts:

Part I, "Security Fundamentals for Web Services"
Part II, "Fundamentals of WCF Security"
Part III, "Intranet Application Scenarios"
Part IV, "Internet Application Scenarios"

Please review this guide and share your feedback either via the discussion or the issue tracker on the codeplex project site.

I am also interested in hearing your feedback, if we should print this book in paper form or having an online version suffice here. Let me know by posting a comment on this blog.

Happy Reading!