1. A computer-implemented method of identifying a person of interest, the method comprising: generating, with a computer processor, a shared topic feed that includes a topic input associated with a user; identifying a subject matter area of the topic input; distributing the shared topic feed to a set of followers; and identifying the user as a person of interest based on follower interactions with the topic input, wherein identifying the user as a person of interest comprises: determining a first number of follower interactions with topic inputs associated with the user that pertain to the subject matter area; determining a second number of follower interactions with topic inputs, associated with a number of other users, that pertain to the subject matter area; and identifying the user as a person of interest for the subject matter based on a determination that the first number of follower interactions is more than the second number of follower interactions.