Sometimes celebrities will use their popularity and influence to encourage an audience to buy a certain pair of shoes, to drink a certain type of soda, or to wear a certain brand of clothing.
According to Forbes, a company is choosing to market through an individual that people connect with (e.g. buying Paula Deen’s pot and pan set) rather than marketing directly to the audience (e.g. a TV commercial where an unknown commercial actress is seen preparing a meal in a certain pot and pan set).
When you buy a product because someone you trust as a categorical expert has recommended it (for example, Michael Jordan has suggested a certain pair of shoes for basketball practice), you’re more inclined to believe their product knowledge is accurate and helpful.
Write down the username, approximately how long they usually go without posting before posting again, what category each account represents (lifestyle, fashion, fitness, technology, luxury, beauty, self-acceptance, etc), how many comments they average, what type of picture and video content they have, whether or not they use professional photogs and videographers or their own resources to product content, what kind of stuff they put on their story, and any other details that stand out to you.