Who's working for you?

This question is important because if you have lots of people working for you, chances are, your career (or business) will progress faster.

But it's important, I think, to define "work" properly. A person works for you IF the output of his work serves as input for your own work. (It doesn't matter whether he/she is your subordinate or not).

If you're a consultant, for example, then many management authors actually work for you, since their output (books, magazine articles, analytical frameworks, etc.) serves as input for your own work. That is, you use their methodologies to make money with clients.