Other forms: influencers
Someone who uses their online reputation to prompt people to buy things is an influencer. Don't spend all your money on an expensive sweater just because it looked great on an influencer!
Influencers are online celebrities, most of whom found their fame on social media platforms. The most popular influencers hold a lot of clout, whether they're publicizing a lifestyle, demonstrating a gadget, or modeling clothing. These internet stars can make a lot of money promoting products for big companies by using their influence over their followers. In addition to this recent definition of influencer, you can also use it for anyone who holds sway over other people's opinions or actions.