http://adverlab.blogspot.com/2007/04/polaroid-and-word-of-mouth.html
My friend Rekha told me about this optical shop up at Harvard Square called Eye Q Optical. They recognize that choosing the right frames can be a difficult job. They do a smart thing. They take a Polaroid snapshot of you with the glasses on so that you can show it to your friends and see what they think. Word of mouth by design.
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