Privacy is something that I have pretty much given up on. Maybe that's why I don't go ballistic (or even mildly nuts) when a store clerk taking my credit card ...

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How is it that a simple five-digit ZIP code provides any insight into who you are? After reading my recent article on how stores often ask for our ZIP codes to build marketing profiles, Michael ...

Recently I wrote an article about why so many stores ask for your ZIP code at check-out. With your name and ZIP they can turn to outside data brokers to learn your address, phone number and email -- ...

Question: My son is insisting that I can send him postcards to his name and 9-digit ZIP code, with no street address included. I don’t believe him. What’s the story and how do ZIP+4 ZIP codes work?