Discussion of content between users of social networks is described. A request from a first user to discuss content with a recipient user in a first social network is received, wherein the recipient user has a first identifier in the first social network. A request from a second user to discuss content with the recipient user in a second social network is received, wherein the recipient user has a second identifier in the second social network. A discussion is initiated between the second user and the recipient user about the content in the second social network. The recipient user is tracked in view of the first identifier in the first social network and the second identifier in the second social network.