A "follower" is a person who subscribes to or supports someone else's ideas, beliefs, or activities, often in the context of social media. Followers can engage with content by liking, sharing, or commenting, which helps to amplify the reach of the original creator's messages. In social media platforms like Instagram or Twitter, followers are essential for building an audience and increasing visibility. The number of followers can indicate popularity or influence, but it is important to note that genuine engagement is often more valuable than sheer numbers.