1. A processor-implemented method performed by a processor-implemented churn reduction system, the method comprising: accessing, by the processor-implemented churn reduction system, activity information associated with a former subscriber of a social network service, wherein the former subscriber is a non-subscriber user of the social network service; comparing, by the processor-implemented churn reduction system, the accessed activity information to activity information associated with current subscribers of the social network service; identifying, by the processor-implemented churn reduction system, based on weights assigned to activities of the activity information associated with the former subscriber and the activity information associated with the current subscribers one or more differences between the activity information associated with the former subscriber of the social network service and the activity information associated with the current subscribers of the social network service; and performing, by the processor-implemented churn reduction system, an action based on the identified one or more differences between the activity information associated with the former subscriber of the social network service and the activity information associated with the current subscribers of the social network service, wherein the action comprises causing a portion of a webpage to be displayed on a screen of the former subscriber of the social network service to prompt the former subscriber to perform an activity to reduce the one or more differences between the activity information associated with the former subscriber and the activity information associated with the current subscribers.