Abstract: Effects of content communications propagated to users of a social networking system may be tracked and measured by the social networking system. Identifiers of content presented to users within a time period before the users interact with the content are recorded. As users interact with the content, additional data describing the interactions with the content and the users interacting with the content are stored. Various metrics may be determined from the data describing interactions with the content. For example including virality metrics and reach metrics, may be determined and presented to the user that posted the content.

Abstract: A user creates an event in a social networking system specifying a location, a time, and a guest list of other users invited to the event. The social networking system generates a page associated with the event that provides information about the event and identifies whether users have responded to invitations to the event. The content of the page may be customized for the user viewing the page to encourage the viewing user to attend the event. For example, the viewing user's relationship to and/or similar characteristics with other users on the guest list is determined and used by the social networking system to identify the users whose responses to invitations are shown to the viewing user via the page. Additionally, a notification method more prominently distributes acceptances of invitations to other users to encourage attendance.