Dan Farber announces Phil Windley's joining the ZDNet blogging ranks as a contributor to Dan and David Berlind's Between the Lines. My first contact with Phil was several years ago when Jon Udell suggested Phil contribute to the InfoWorld Test Center. It was a good idea then and now. Phil's forthcoming O'Reilly book promises to have a seminal role in the move toward an identity infrastructure. Phil is one of a growing breed of communicators whose experience as practitioners adds weight to their ideas about how the future should work.