1. A computer-implemented method comprising: providing a first interface on an external system for receiving and displaying posts related to an event; receiving via the first interface a plurality of posts by users of the external system related to the event; providing a second interface on a social networking system for receiving posts by users of the social networking system; receiving via the second interface a plurality of posts by users of the social networking system; and providing for display via the first interface: one or more of the plurality of posts received via the first interface from users of the external system, and one or more of the plurality of posts received via the second interface from users of a social networking system.