Hashtags are words or phrases preceded by the "#" symbol, used primarily on social media platforms to categorize content. They help users find posts related to specific topics, making it easier to discover and engage with relevant information. For example, a post about a music festival might include the hashtag #musicfestival to connect with others discussing the same event. When users click on a hashtag, they are directed to a feed of all posts that include that tag. This feature enhances visibility and encourages interaction among users interested in similar subjects, such as travel, food, or fitness.