5. The system of claim 1 , wherein the second data comprises a first sub-set and a second sub-set, the first sub-set corresponding to a third social circle and the second sub-set corresponding to a fourth social circle, the third and fourth social circles having been defined by the author user using the social networking service.
5. The system of claim 1 , wherein the second data comprises a first sub-set and a second sub-set, the first sub-set corresponding to a third social circle and the second sub-set corresponding to a fourth social circle, the third and fourth social circles having been defined by the author user using the social networking service. 6. The system of claim 5 , wherein the first sub-set indicates a first number of the one or more first contacts associated with the third social circle and an identifier of the third social circle.