Full form of # is Hashtag

A hashtag is a word or phrase preceded by the hash symbol (#), used on social media platforms to categorize content and make it discoverable. Originating on Twitter, hashtags have become a universal tool across the internet for tagging topics of interest. By clicking on a hashtag, users can view all public posts that include that tag, making it an effective way to join conversations or follow trends. In addition to social media, hashtags are employed in marketing campaigns to boost engagement and visibility. Their simplicity and versatility make them a staple in digital communication, serving both casual users and businesses aiming to reach broader audiences.