I'm in the position of having three (or three and-a-half -- :) ) very different jobs. I've worked as a professional film editor for many years in a wide variety of markets -- films, television, corporate, commercials, show films, etc. I am also a professor at the USC School of Cinema-Television and run a small department there. Finally, I co-own a small Internet Consulting business which does database consolidation for a variety of industries and also builds applications, primarily for the entertainment industry -- music and film. I also am a writer in many of these categories (that's the "half" job).
That's a long-winded way of saying that my clients are hugely varied and have a variety of egos, needs, business goals, and business acumen.
Yet I have found that Manager Tools is incredibly useful across all of my job areas and clients. Even as a film editor, I am a manager. As a professor, I have need for time management, personnel management, task management. And, of course, as an Internet Consultant/Product Manager, we need most of the tools you talk about -- including skip levels, network building tools, and much much more.
The point is this -- in the 21st Century, we all need to be entrepeneurs and managers of our own work and our own careers. As such, there is nothing that we cannot learn about management that doesn't help us. The similarities in how to maneuver in this world across differing careers, are much more prevalent than the differences.
As such, I find MT an amazingly effective, very user accessible, tool for my daily life. Thanks so much for all of your work with the cast and with this site.
P.S. Do you realize that there is a huge opening for delivering these messages to people who wouldn't consider themselves as the audience for them? That is people who don't consider themselves managers at all?