By now, if you use any online social media platform, particularly Twitter, you’ve undoubtedly seen this symbol: #. So what does this little symbol actually do?
Twitter defines the # symbol, called a hashtag, as a symbol used to mark keywords or topics in a Tweet. It was created organically by Twitter users many years ago as a way to categorise messages. It is a much easier way to find tweets you’d be interested in as Twitter’s popularity increases and more and more tweets are being shared.