The logical and analytical type. They are especialy attuned to difficult creative and intellectual challenges and always look for something more complex to dig into. They are great at finding subtle connections between things and imagine far-reaching implications.
They enjoy working with complex things using a lot of concepts and imaginative models of reality. Since they are not very good at seeing and understanding the needs of other people, they might come across as arrogant, impatient and insensitive to people that need some time to understand what they are talking about.
Right on? Or equivalent to an astrological reading -- they're always sufficiently vague and flattering that we fall for them. A related site guessed, correctly, that I am male, but since a majority of bloggers are male, that is not particularly impressive -- it made the same guess for Digby.