In one embodiment, a method includes receiving an identifier for a first user initiating a communication between a first device associated with the first user and a second device associated with a second user, retrieving, using the identifier, a privacy rule associated with the first user, determining, based on the privacy rule and social-networking information associated with the first user, whether one or more items of information associated with the first user are allowed to be revealed to the second user, and sending, to the second device, any of the items of information associated with the first user that are allowed to be revealed to the second user for display in association with the communication between the first device and the second device.