Ok, that didn't take long. Anybody who wants a better understanding of the kung-fu of MMO design should read this
The Laws of Online World Design. This is actually the second time in as many weeks that I've ended up surfing to Mr. Koster's page. He's in serious jeopardy of getting into my pantheon of design gods.
I have to say this article realy speaks to one of my core phylosophies. I think I shall ponder it's implications on my personal design work.
Or not (arrogance is its own shield).