Did Twitter invent the hashtag?

Answer: No. They've been around since 1988 (at least).

Entrepreneur - Twitter did not invent the hashtag. #NoSeriously, it didn’t. Hashtags date back to 1988, when people communicated via chat rooms called Internet Relay Chats (IRCs). The first hashtags made their way to Twitter in 2007, when Chris Messina, formerly of Google and now a lead developer at Uber, proposed using them as a way to lump together related tweets. The simple searchable tags instantly caught on. 

Here are some other interesting facts about Twitter, courtesy of CNBC:

 1) This was Twitter's first ever homepage. The site opened to the public on July 15, 2006.

2) When Twitter began, everyone's first tweet was automated. It published, "Just setting up my twttr." Co-founder Dorsey sent the first tweet—beating Biz Stone by a minute—on March 21, 2006. It now has more than 50,000 retweets.

3) The official name of Twitter's bird is Larry. Yes, his name is Larry Bird. The iconic little fellow—seen in Twitter's logo shown in TV commercials, print ads and practically every website—was named after Boston Celtics legend Larry Bird.

4) Ending a tweet with an empty hashtag is called a hangtag, and it's Twitter's version of the mic drop, the team at Medium declared recently.

5) Three years, two months and one day: The time it took from the first tweet to the billionth tweet.

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