A Hashtag plays a crucial role in digital marketing because it is a phrase or word that comes after the ‘#’ sign and communicates to algorithms and users that a piece of information is related to a particular category or topic. Earlier, the octothorpe or the pound symbol on your keyboard was used to represent numbers. In 2007, Chris Messina, the website marketing specialist, first used hashtags for Twitter. Also, this company might use the pound symbol for group-related tweets. https://www.marketingmademodern.com/post/are-hashtags-still-important-in-2022