1. A computer program product for improving social network users' interactions, the computer program product comprising a computer readable storage medium having program code embodied therewith, the program code comprising the programming instructions for: monitoring posts in an original thread of a social networking system to determine a history of interactions by topic; analyzing content of said monitored posts to group said monitored posts by topic, wherein a first group of said monitored posts directed to a first topic is posted by a first set of users; analyzing one or more of users' profiles, liked pages and friends' graphs for said first set of users to determine relationships among users of said first set of users; analyzing one or more of past communication patterns and said liked pages of said first set of users to determine a likelihood of responding to posts; and splitting posts in said original thread into a new thread containing said first group of said monitored posts directed to said first topic and having a second set of users of said first set of users to participate in said new thread, wherein each of said second set of users is selected based on said analysis of one or more of said users' profiles, liked pages and friends' graphs for said first set of users and said analysis of one or more of said past communication patterns and said liked pages of said first set of users, wherein each of said second set of users has a relationship with one or more users of said second set of users and has a likelihood of responding to a post that exceeds a threshold value.