11. The system of claim 10 , wherein the post comprises a search result selected by the user.
10. A system for identifying a person of interest, the system comprising: a computer processor that forms a functional component of the system; a topic feed generator generating a shared topic feed that includes a post comprising material attributed to a user; a feed distributor distributing the shared topic feed to a set of followers; and a statistics generator identifying the user as a person of interest, using the computer processor, based on follower information indicative of a number of followers that receive the topic feed; wherein the user has an extended set of followers that includes an initial set of followers and subsequent followers downstream of the initial set of followers, and wherein the statistics generator tracks a number of times a post attributed to the user is interacted with by the extended set of followers.