Systems and methods for reducing virality of content from domains with questionable reputation in a social networking system

Systems and methods are disclosed herein for receiving, by a social networking system, from a domain, a request to publish a content item. The social networking system publishes the content item and receives a request to reshare the content item from a user. The social networking system responsively determines a reputability score for the domain based on a number of other domains that point to the domain in the context of the social network interface, and determines whether the reputability score exceeds a threshold score. If the reputability score exceeds the threshold, the content item is published using a default ranking; otherwise a discounted ranking is used.