Twitter's Hashtag Turns 10 Today. Here's How Brands Cashed In as It Evolved From Its Humble Origins

And it created a hashtag emoji to celebrate (of course)

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Today is the 10th anniversary for Twitter’s hashtag, the number, pound or hash sign associated with everything online from brand hype to hate.

The milestone, which Twitter is celebrating with a special hashtag of its own today (#Hashtag10) as well as an emoji, marks the birthday of a ubiquitous symbol of the social platform’s own brand. But it’s also a reminder of how one little symbol can permeate culture to such a degree that everyone from advertisers and media companies to comedians and politicians have used and abused it for marketing their own messages.

In a blog



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