A warning to all you Valley types: If a short, dark-haired woman with huge sunglasses gets near you, run. It could possibly be Kara Swisher of AllThingsD. The Wall Street Journal reporter turned conference organizer has a videocamera, and she's not afraid to use it. To get an idea of the kind of damage she can do to your company's image with this device, look no further than this clip featuring yours truly and colleague Megan McCarthy.

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