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And Once We Figure That Out, Let's Talk Hashtag
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The recent death of the guy who invented email brought some attention to a mystery: where did the @ sign come from? Nobody knows. There are examples going back to the 1500s, but it meant different things at different times. Weirder, it appeared on the earliest typewriters even though it was of very limited use back then, mostly in accounting. How did it become the essential mark we use today? (BBC)
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