1. A computer implemented method for determining a first user's impact on the first user's content pool in an online social network based on responses by other users to posts made by the first user, the method comprising: receiving, through at least one input device, one or more responses to one or more posts by the first user, each of the one or more responses being by one or more of the other users; determining, using one or more processors, a response score for each of the one or more responses; determining, using one or more processors, a post score for each post of the one or more posts by the first user, the post score based at least in part on the response score for one or more responses to that post; determining, using one or more processors, a cumulative score for the first user based at least in part on the post score for one or more posts by the first user; determining, using one or more processors, an impact score for the first user based at least in part on the cumulative score of the first user and a total number of friends that the first user has within the online social network; and outputting, through at least one output device, the impact score for the first user.