Much of the information in this book comes from direct in-person, telephone, and e-mail interviews by the authors with the people and representatives of the companies described in the book. Facts and quotes that do not have a note come from these personal interviews.

In these notes, when citing a long Web address, we typically use an equivalent address of the form We created these site references for the convenience of the reader. Enter the Web address into your browser and you will be redirected to the appropriate site online.

Please note that as in all cases with Web addresses, people sometimes change or remove content that we have cited. Web content cited was visible at the time the book was written or revised. ...

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