18. A computer program product comprising a non-transitory computer usable storage medium including a computer readable program, wherein the computer readable program when executed on a computer causes the computer to: receive data indicating an engagement action associated with a content item, the engagement action performed by a first user and the content item associated with a topic; determine a first topical reputation score related to the topic for the first user based on one or more other engagement actions associated with the content item; receive data describing a second management action performed by a second user on the content item, where the second user has abilities to curate content items associated with the topic, the second management action including one of an approval and a rejection to include the content item in the topic; determine a first set of impact scores for the second management action performed by the second user; and adjust the first topical reputation score for the first user based on the first set of impact scores.
18. A computer program product comprising a non-transitory computer usable storage medium including a computer readable program, wherein the computer readable program when executed on a computer causes the computer to: receive data indicating an engagement action associated with a content item, the engagement action performed by a first user and the content item associated with a topic; determine a first topical reputation score related to the topic for the first user based on one or more other engagement actions associated with the content item; receive data describing a second management action performed by a second user on the content item, where the second user has abilities to curate content items associated with the topic, the second management action including one of an approval and a rejection to include the content item in the topic; determine a first set of impact scores for the second management action performed by the second user; and adjust the first topical reputation score for the first user based on the first set of impact scores. 19. The computer program product of claim 18 , wherein the first set of impact scores includes a first impact score generated by the second management action and a second impact score generated by a new engagement action established upon the second management action.