A user may express an interest in a set of individuals represented in a set of individual stores (e.g., friends in a social network and colleagues in an academic directory). Such individuals may send to the individual stores messages that are associated with a location, and the user may request, from respective individual stores, a presentation of the locations. According to the techniques presented herein, the messages from the individual stores may be aggregated, and the locations associated with the aggregated messages may be presented in a map, thereby presenting to the user the locations of the messages of the individuals irrespective of from which individual store each message was received. Additionally, the map may present the messages to the user, and upon receiving form the user a reply to a message, may send the message to the individual store from which the message was received.