An unedited draft of Chapter 1, Introduction to P3P, is available as a downloadable PDF file. This chapter is a good executive summary on P3P. It provides an overview of what P3P is and how it works, explains the basic steps involved in P3P-enabling a web site, and discusses why web sites adopt P3P.
Web Privacy with P3P
by Lorrie Faith Cranor
with Foreword by Lawrence Lessig
O'Reilly & Associates
344 pages, $39.95