John Gruber makes a quite decent living selling ads around his punditry--he doesn't need to sell t-shirts. His "telling" isn't about what he does, but what Apple does. So his "doing" is "telling." ;-)
He also invented what's turned into the latest quite successful ascii markup language (Markdown). That's pretty good doing, establishing a useful standard.
He also invented what's turned into the latest quite successful ascii markup language (Markdown). That's pretty good doing, establishing a useful standard.