What’s a Micro-Influencer? There’s no official textbook definition of a micro-influencer, yet the term is receiving more and more recognition in digital marketing. A micro-influencer usually is a person with an engaged social audience. He or she is often considered an expert within a specific field and therefore has a big impact on the buying decisions of his social network. You probably have several micro-influencers around you. Think of that one friend on Facebook that loves music and keeps recommending new bands while receiving authentic comments by friends with a similar interest. Imagine the impact this person could have on the sales of an upcoming band if activated by the label.