Influencer marketing is a form of social media marketing involving endorsements and product placement from influencers, people and organizations who have a purported expert level of knowledge or social influence in their field.
Classified advertising is a form of advertising, particularly common in newspapers, online and other periodicals, which may be sold or distributed free of charge. Classified advertisements are much cheaper than larger display advertisements used by businesses, although display advertising is more widespread
Promoter is a marketing professional responsible for demonstrating the features of a product to an audience or client. Promoter shows how the product works, takes questions and attempts to persuade consumers or clients to buy the product