On the 23rd August 2007 Chris Messina sent an historic tweet…

And so the hashtag – as we now know it – was born. That was 10 years ago – let that sink in. Feeling old yet?

What’s amazing is the impact the hashtag has had over the past 10 years. This news makes us feel old simply because it feels as though # has been around forever.

The most used hashtag in the year of its birth – #noticias – was used a mere 9,000 times. The most used hashtag so far in 2017 has already been tweeted more than 300 million times.

125 million hashtags are used every day.

And have helped define some of the world’s most important cultural and political events…