Maybe it's my own limited view of dichotomies, but I responded to Sunshine's inquiry on shyness based on what we normally see as E/I results. Jung's definition never discusses gregariousness or even the direction of energy. Instead he simply says that extraverts focus and take into account the object (anything outside themselves) whereas introverts don't. I originally pasted his definitions, but they're too long. If anyone would like to read them and compare, they can be found again at this site.
I have been wondering for some time whether I am dismissing ESTP because of my limiting view of E/I. I really would like some pro and con feedback from varied theories. One I am considering strongly is Berens' interaction styles.