1. A method comprising: identifying a user of a first social network service based on a first identifier of the user through which an application is accessible to the user from the first social network service; accessing a database that stores a correlation between the first identifier of the user and a second identifier of the user through which the application accessible to the user from the first social network service is accessible to the user from a second social network service; accessing a configuration of the application based on the correlation between the first identifier of the user and the second identifier of the user; and configuring the application in accordance with the configuration accessed based on the correlation between the first identifier and the second identifier, the configuring of the application being performed by a processor of a machine.