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Brent writes: "Every MINI owner was mailed a little black box containing a book entitled, "A Dizzying Look At The Awsomeness of Small." At the end of the book is a "secret" compartment hiding a few gadgets that are meant to be used with upcoming advertisements. One of them happens to be the magic window decryptor capable of showing us the secret text." (more details)
Earlier:
Rethinking Print Advertising