Social media hashtags are words or phrases preceded by the "#" symbol, used to categorize content and make it easily discoverable. They help users find posts related to specific topics, events, or trends. For example, using the hashtag #Travel allows people interested in travel-related content to find relevant posts quickly. Hashtags can be used on various platforms, including Twitter, Instagram, and Facebook. They can also help increase engagement by connecting users with similar interests. When a hashtag gains popularity, it may become a trending topic, drawing even more attention to the associated content.