The folks at Loopt managed to garner a heaping helping of positive publicity from Michael Arrington by releasing a tool allowing readers of Arrington's TechCrunch blog to stalk each other out in the real world. And not only will it help you raise all sorts of privacy concerns among perfect strangers, Arrington himself will tell you where he is in the world at all times. So it shouldn't be hard to find him when he ditches the plebes at the next TechCrunch event for a Scotch-fueled afterparty. (Photo by Andrew Mager)

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