Typealyzer will analyze and suggest a Jung-Myers-Briggs type. It also shows a brain activity analysis which looks cool.
Forty Plus Two was classified as INTJ – The Scientists while Zen and more was classified as ISTP – The Mechanics. I think both should be taken with a grain of salt but it shows that sticking to a set choice of blogging topics gives a different result than my personal Jung-Myers-Briggs type.
Genderanalyzer determines if a homepage is written by a man or woman. Both of my blogs were rightly typed as written by a man.