influencer

An  influencer  is a person with a large number of followers, typically on social media silo profiles, often with their own independent blog, who also receives a lot of responses on their posts, that brands sometimes seek out, and other times themselves seek out brands, to do deals for goods and/or services in exchange for posts.

Why
Being or becoming an influencer may be another motivation to POSSE your posts, to expand your reach, and show greater engagement by backfeeding responses to your own website.