On August 23, 2007, user Chris Messina used the first hashtag on Twitter #Barcamp. Today, an average of 125 million hashtags are tweeted per day.
From #MAGA to #Maythe4th, here are some of the biggest hashtags of the first 10 years of the hashtag.
As Twitter's hashtag celebrates its 10th anniversary, PRWeek reporters spar over whether it's still necessary for brands.
Twitter. Never. Forgets.