Hashtags rule. But why? And where did # come from? - video | Technology | The Guardian - 2 views
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Heather Bailie on 10 Jan 15"Here, there and bloody everywhere! It may only be four criss-crossing lines but the # has invaded our daily lives and hijacked the way we communicate. But how did it come to dominate global digital culture? Ollie Peart dares to find out "