The Meyers-Briggs categories

Is there anyone alive who has not taken a Meyers-Briggs personality inventory test? My wife and I both took one of these during our engagement period to determine the extent to which we were compatible. I am an INTJ, a type apparently common to academics. I wonder whether these have not become the equivalent of signs of the zodiac in some circles: What's your Meyers-Briggs type? Do these categories have any legitimacy? Perhaps, but like everything else in life they have their limitations.