I saw this over at Megan McArdle's blog at the Atlantic. She says that it didn't get her right and I'm dubious about these things, but I ran the Spectrum site and blog through the online Meyers-Briggs blog Typealizer. They both came out the same.
ISTP - The Mechanics
The independent and problem-solving type. They are especially attuned to the demands of the moment are masters of responding to challenges that arise spontaneously. They generally prefer to think things out for themselves and often avoid inter-personal conflicts.
The Mechanics enjoy working together with other independent and highly skilled people and often like seek fun and action both in their work and personal life. They enjoy adventure and risk such as in driving race cars or working as policemen and firefighters.
Independent of mind and problem-solving, adventure-loving and highly skilled - that probably does describe most of the folks who write (and read) Spectrum. Although I'm pretty dubious about the efficacy (since the conditions change results) of these sorts of tests (and let's make that completely dubious about the Typealyzer), thinking about folks as multifaceted types (which is true) rather than just Left or Right provides a lot more room for conversation and understanding.
I can't really remember what my type is, but it would be interesting to see if all the contributors (and readers) have these types in common.
Do you know your Meyers-Briggs type?
This is a companion discussion topic for the original entry at http://spectrummagazine.org/node/1233