What is a YouTube influencer? It is someone that has developed a channel and has a huge number of subscribers in their chosen field. YouTube is a massive platform and it provides huge outreach for influencers. With the right influencer marketing you can set trends on the platform and make a great deal of money. Imagine doing something that you love every day and bringing entertainment and pleasure to millions. Every possible niche has at least one influencer on YouTube and some niches have several. There are influencers in travel, video gaming, product reviews and many more. Some of these influencers earn significant incomes.