Multilevel Marketing (MLM) is a business model where individuals earn income not only from their own sales of products or services but also from the sales made by people they recruit into the business. This creates a hierarchical structure, often referred to as a "downline," where participants can earn commissions based on the performance of their recruits. In MLM, participants typically sell products directly to consumers, often through personal networks or social media. While some people find success in MLM, it is important to note that many participants may not earn significant income, and the model has faced criticism for its resemblance to pyramid schemes, which are illegal in many places.