5. The method of claim 4 , further comprising serving, via a network, the at least one annotation to a user device of another user for display in conjunction with the recommended content.
4. The method of claim 1 , 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.