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You get to your favourite coffee shop, fantasizing about that frothy latte and perhaps a bite to eat. You open the door and gasp with horror. A sea of laptops is spread out in front of you. Every seat is taken by people who camp out for hours using your favourite cafe as a home office. It's not just frustrating for customers. People coming into cafes to use their laptops and the free wifi can also cost businesses money. And some are taking a stand against it, as Elizabeth Hotson has been finding out. (Photo by: Jeffrey Greenberg/UIG via Getty Images)