Is Personality Typing Used In IT?

Hades- writes: "I'm a dual major at Penn State in a dual major consisting of Computer Engineering and the IST. In one of the entry-level courses of the IST program we have been discussing the Meyers Briggs Personality Indicator and its usefulness. I've written a brief paper on the subject over the past week and now I wanted to see what you, the Slashdot community thinks of this test. The test judges your personality type by answering quite a few questions. The result is a 4-letter personality type. These results can give you some sort of guidance towards a career. However, in this class we've been concentrating on group work. These tests can show who the leader, and what parts other people should be fitting to in the model. My real question is, are any of the technology companies actually using these tests? Are they optional or required? It also brings up a good point in how it would work on different kinds of open source projects by placing some people into positions and the like." Meyers-Briggs Type Indicators ^[?] have been around for quite a while, however I'm not aware of anyone using the results of these tests in any form of project management. Do you think these tests have any value and should they have any impact on the direction of one's career?