10. The system of claim 1 , wherein the post is generated by the author user using the social networking service.
1. A system, comprising: one or more computing devices; and one or more computer-readable media coupled to the one or more computing devices and having instructions stored thereon which, when executed by the one or more computing devices, cause the one or more computing devices to perform operations comprising: transmitting a content data set to a computing device for displaying a post to an author user in a stream page of a social networking service, the post including a privacy setting that is displayed with the post, the author user having authored the post; receiving user input from the author user, the user input being associated with the privacy setting; in response to receiving the user input; identifying a distribution of the post, the distribution including one or more first contacts that have access to the post and are associated with the author user; identifying, for each first contact of the one or more first contacts, one or more second contacts associated with the first contact; comparing, for each second contact of the one or more second contacts, the second contact with each of the first contacts; based on the comparing, identifying one or more overlapping contacts; transmitting first data and second data to the computing device for display to the author user, the first data comprising a number of the one or more first contacts that are able to access the post and the second data indicating one or more relationships between the author user and the one or more overlapping contacts; receiving first user input, the first user input indicating creation of a first social circle; in response to receiving the first user input, providing one or more social networking contacts of the social network service for display to the author user, the one or more social networking contacts comprising social networking contacts associated with the author user; receiving second user input, the second user input indicating a selection of the one or more social networking contacts to define a first group of contacts and a second group of contacts; and generating the first social circle, the first group of contacts populating the first social circle, wherein one of the second data corresponds to the first social circle.