Bill was the first Microsoft employee to deliver the LINUX World Keynote. As you may know Bill's closely with the LINUX community over the years and hence he has an excellent perspective on the benefits of different approaches to software development.

Bill has kindly annotated the notes from his keynote for those of us who weren't able to be at the event.

There's a great deal of interesting information on Port25 - it's a blog written by members of the Microsoft Open Source Lab.