A method comprising: receiving, by a social networking system, a first message from a mobile device application on a first-user mobile device (120, 210) associated with a first user, the message comprising a first-user identifier corresponding to a first-user account maintained for the first user by the social networking system; determining, by the social networking system, a location of the first-user mobile device (120, 210); storing, by the social networking system, privacy data comprising a plurality of user settings for a plurality of users in a privacy policy database, each of the plurality of user settings being associated with a type of user datum associated with a particular user; determining, by the social networking system, that a plurality of mobile devices (120, 210) are within a vicinity of the location of the first-user mobile device (120, 210) and within a local RF range for direct connectivity with the first-user mobile device (120, 210), and that a particular user setting associated with each of the plurality of users of the plurality of mobile devices (120, 210) allows for one or more types of user data associated with a location to be shared with the first user, each of the plurality of mobile devices (120, 210) being associated with a user identifier corresponding to a user account maintained by the social networking system; and transmitting, by the social networking system, a second message to the first-user mobile device (120, 210), the second message enabling the first user to create a group within the social networking system; receiving, by the social networking system, a request to create the group including the first user and each of a plurality of users being associated with the plurality of mobile devices (120, 210) within the local RF range for direct connectivity with the first-user mobile device (120, 210); and creating and storing a record of the group in a social graph information, as record of user relationships with other users in the social-networking system. receiving, by a social networking system, a first message from a mobile device application on a first-user mobile device (120, 210) associated with a first user, the message comprising a first-user identifier corresponding to a first-user account maintained for the first user by the social networking system; determining, by the social networking system, a location of the first-user mobile device (120, 210); storing, by the social networking system, privacy data comprising a plurality of user settings for a plurality of users in a privacy policy database, each of the plurality of user settings being associated with a type of user datum associated with a particular user; determining, by the social networking system, that a plurality of mobile devices (120, 210) are within a vicinity of the location of the first-user mobile device (120, 210) and within a local RF range for direct connectivity with the first-user mobile device (120, 210), and that a particular user setting associated with each of the plurality of users of the plurality of mobile devices (120, 210) allows for one or more types of user data associated with a location to be shared with the first user, each of the plurality of mobile devices (120, 210) being associated with a user identifier corresponding to a user account maintained by the social networking system; and transmitting, by the social networking system, a second message to the first-user mobile device (120, 210), the second message enabling the first user to create a group within the social networking system; receiving, by the social networking system, a request to create the group including the first user and each of a plurality of users being associated with the plurality of mobile devices (120, 210) within the local RF range for direct connectivity with the first-user mobile device (120, 210); and creating and storing a record of the group in a social graph information, as record of user relationships with other users in the social-networking system.