Influencers in social media are people who have built a reputation for their knowledge and expertise on a specific topic. They make regular posts about that topic on their preferred social media channels and generate large followings of enthusiastic, engaged people who pay close attention to their views. Brands love social media influencers because they can create trends and encourage their followers to buy products they promote. You can separate different types of influencers in multiple ways. Some of the most common methods are by follower numbers, by types of content, and by the level of influence. You can also group influencers by the niche in which they operate. This means that influencers who may appear in a low category by one measure may seem more influential when looked at in another way.