The Myers Briggs Type Indicator is definitely quite a useful tool. If you get a good detailed descriptions of the types, there is some really interesting stuff in there. Like primary and auxiliary characteristics. I myself am an INFP/INTP (being exactly borderline F-T(Feeling-Thinking), heavy P(Perceiving) and N(iNtuitive)).As for women being more social, I think it's interesting that this is reflected in the MBTI statistics; for women the F-T distribution is 60-40 (while for men it is 50-50).