A social network advertises to its members with engagement interfaces. An engagement interface comprises a call to action and a link to perform the action within the social network from within the engagement interface. Responsive to a user selection of the link to perform the action, the engagement interface modifies one or more objects within the social network associated with the call to action according to the selection of the link to perform the action. The engagement interface may be refreshed on the user's screen to indicate to the user that the action has been performed. An engagement interface may also be presented to a user from the social network or from an external system apart from the social network.