Abstract: In one embodiment, one or more computing systems may receive an indication of a first location of a first mobile-client system of a first user associated with an online social network. The one or more computing systems may identify one or more second users from among a plurality of users associated with the online social network based on one or more notification rules. Each identified second user may be associated with a second mobile-client system having a second location within a threshold distance of the first location and may be within a threshold degree of separation of the first user on the online social network. The one or more computing systems may send a first notification to the first mobile-client system of the first user. The first notification may reference one or more of the identified second users.

Abstract: In one embodiment, a mobile-client system may receive user input from a first user to send a message to a plurality of second users. The user input may include an indication of the first user currently being located at a first geographic location, a time period for which the first geographic location of the first user is visible to the plurality of second users, and one or more content items shared by the first user. The mobile-client system may send the message to one or more second users selected from the plurality of second users. The mobile-client system may receive a notification referencing one or more of the selected second users to whom the message was sent. The notification may include an indication of one or more second geographic locations shared by the one or more of the selected second users.

Abstract: In one embodiment, a mobile-client system may receive user input from a first user to send a message to a plurality of second users. The user input may include an indication of the first user currently being located at a first geographic location, a time period for which the first geographic location of the first user is visible to the plurality of second users, and one or more content items shared by the first user. The mobile-client system may send the message to one or more second users selected from the plurality of second users. The mobile-client system may receive a notification referencing one or more of the selected second users to whom the message was sent. The notification may include an indication of one or more second geographic locations shared by the one or more of the selected second users.

Abstract: In one embodiment, a mobile-client system may store location history data during a first time period in its memory, where the location history data comprises a plurality of geographic locations during the first time period and one or more time stamps corresponding to each of the geographic locations. The mobile-client system may detect whether it has a current network connection to an online social network. The mobile-client system may determine whether to transmit the stored location history data to a location server of the online social network, where if it is currently connected to the online social network, then the mobile-client system transmits the location history data to a location server using the current network connection, and if it is not currently connected to the online social network, then the mobile-client system refrains from transmitting the location history data to the location server.

Abstract: In one embodiment, a mobile-client system may store location history data during a first time period in its memory, where the location history data comprises a plurality of geographic locations during the first time period and one or more time stamps corresponding to each of the geographic locations. The mobile-client system may detect whether it has a current network connection to an online social network. The mobile-client system may determine whether to transmit the stored location history data to a location server of the online social network, where if it is currently connected to the online social network, then the mobile-client system transmits the location history data to a location server using the current network connection, and if it is not currently connected to the online social network, then the mobile-client system refrains from transmitting the location history data to the location server.

Abstract: In one embodiment, a mobile client system may determine its location. The mobile client system may store the location in a location history in a memory of the mobile client system, where the location history comprises one or more geographic locations and one or more time stamps corresponding to each of the geographic locations. The mobile client system may detect its current status based at least in part on whether the mobile client system is stationary. The mobile client system may send the location history to a location server of an online social network based at least in part on the current status of the mobile client system and a power requirement for sending the location history to the location server.

Abstract: In one embodiment, a mobile client system of a first user may determine a first location of the mobile client system, where the first user corresponds to a first node of a social graph of the online social network, the social graph comprises a plurality of nodes and a plurality of edges connecting the nodes, and each of the edges between two of the nodes represents a single degree of separation between them. The mobile client system may send an indication of the first location and one or more and one or more notification preferences to a computing system associated with the online social network. The mobile client system may receive a notification referencing one or more second users of the online social network, where each second user is associated with a mobile client system having a second location within a threshold distance of the first location.

Abstract: In one embodiment, a computing system may access a social graph comprising a plurality of nodes and a plurality of edges connecting the nodes, each of the edges between two of the nodes representing a single degree of separation between them, the nodes comprising a first node corresponding to the first user, the first user being associated with an online social network, and a number of second nodes corresponding to a number of second users associated with the online social network. The computing system may receive an indication of a first location of a mobile-client system of the first user. The computing system may identify one or more second users based on one or more notification rules, where each second user is associated with a mobile-client system having a second location within a threshold distance of the first location.

Abstract: In one embodiment, a mobile client system may determine its location. The mobile client system may store the location in a location history in a memory of the mobile client system, where the location history comprises one or more geographic locations and one or more time stamps corresponding to each of the geographic locations. The mobile client system may detect its current status based at least in part on whether the mobile client system is stationary. The mobile client system may send the location history to a location server of an online social network based at least in part on the current status of the mobile client system and a power requirement for sending the location history to the location server.