Abstract: Methods, systems, and computer programs are presented for an online community management system. One method calculates users' reputations that are based on the activities of each user in the online community. The reputation measures the quality of the user activities in the community. Further, the method includes operations for periodically calculating reputation statistical measures based on the users' reputations, and for sorting the users based on the reputation statistical measures. A user interface for a manager of the online community is provided, the user interface including a presentation of reputation information about a group of users of the online community identifying trends in changes of the reputation. The group of users is selected based on the sorting, and the user interface provides an option to select a first user from the group of users to obtain a display of events associated with the selected user in the online community.