7. A system, comprising: a data processing apparatus; and a memory storage apparatus in data communication with the data processing apparatus, the memory storage apparatus storing instructions executable by the data processing apparatus and that upon such execution cause the data processing apparatus to perform operations comprising: receiving, through a user interface of a social network application presented at a user device, an indication that a user recommended content displayed the user interface, wherein the recommended content includes a plurality of different content components corresponding to different portions of the recommended content; responsive to receiving the indication that the user recommended content displayed in the user interface, requesting user interaction data indicative of the user recommendation of content displayed in the user interface; receiving user interaction data that includes an action taken by the user, a time corresponding to the action, and a content identifier identifying the content the user recommended; mapping at least one annotation specifying the action taken to the different portions of the recommended content; and distributing, based on the mapping, recommended content through a social network with the at least one annotation at a presentation location corresponding to at least one content component of the recommended content.
10. The system of claim 7 , wherein the instructions cause the data processing apparatus to perform operations further comprising: responsive to receiving the indication that the user recommended content displayed in the user interface, sending to a server in communication with the user device over a network, data identifying the at least one content component of the recommended content selected by the user; and receiving at the user interface of the social network application and from the server, the at least one annotation for display in the user interface of the social network application indicating the at least one content component of the recommended content to which the recommendation of the user applies.