Abstract: In one embodiment, a user of a social networking system requests to check in a place near the user's current location. The social networking system generates a list of places near the user's current location, ranks the places in the list of places near the user's current location by a distance between each place and the user's current location, as well as activity of the user and the user's social contacts for each place, and returns the ranked list to the user.

Abstract: In one embodiment, a user of a social networking system requests to check in a place near the user's current location. The social networking system generates a list of places near the user's current location, ranks the places in the list of places near the user's current location by a distance between each place and the user's current location, as well as activity of the user and the user's social contacts for each place, and returns the ranked list to the user.

Abstract: A server system includes a processor and a data structure having an entry for a resource, the entry including a first sequence number. The server has communication procedures for receiving a request from a client to access the resource, where the request includes a second sequence number obtained from a service, and a resource request handling program. Upon receiving the request, the resource request handling program determines whether the server has any record of having previously received a request to access the resource. If not, the server returns a provisional rejection to the client, requiring the client to verify that it holds a lock on the specified resource. A provisional bit in the entry is initially set to indicate that the resource has not been accessed since the system was last initialized. The provisional bit is reset when a request to access the resource is granted.

Abstract: In one embodiment, a user of a social networking system requests to check in a place near the user's current location. The social networking system generates a list of places near the user's current location, ranks the places in the list of places near the user's current location by a distance between each place and the user's current location, as well as activity of the user and the user's social contacts for each place, and returns the ranked list to the user.

Abstract: A server system includes a processor and a data structure having an entry for a resource, the entry including a first sequence number. The server has communication procedures for receiving a request from a client to access the resource, where the request includes a second sequence number obtained from a service, and a resource request handling program. Upon receiving the request, the resource request handling program determines whether the server has any record of having previously received a request to access the resource. If not, the server returns a provisional rejection to the client, requiring the client to verify that it holds a lock on the specified resource. A provisional bit in the entry is initially set to indicate that the resource has not been accessed since the system was last initialized. The provisional bit is reset when a request to access the resource is granted.

Abstract: In one embodiment, a user of a social networking system requests to check in a place near the user's current location. The social networking system generates a list of places near the user's current location, ranks the places in the list of places near the user's current location by a distance between each place and the user's current location, as well as activity of the user and the user's social contacts for each place, and returns the ranked list to the user.

Abstract: In one embodiment, a user of a social networking system requests to check in a place near the user's current location. The social networking system generates a list of places near the user's current location, ranks the places in the list of places near the user's current location by a distance between each place and the user's current location, as well as activity of the user and the user's social contacts for each place, and returns the ranked list to the user.

Abstract: In one embodiment, a user of a social networking system requests to search for a place near the user's current location. The social networking system generates a list of places near the user's current location, select a sub-set from the list of places based on visibility and activity of the user and the user's social contacts for each place in the list, and returns the sub-set to the user.