Implicit geolocation of social networking users

One or more computer-readable non-transitory storage media embodying software that is operable when executed to:

• receive, from a requesting service, a request for a location prediction for a user;
• generate a current location prediction from a plurality of previous location signals, wherein each previous location signal comprises an indication of the user's location at a respective time prior to a predetermined time span, and wherein each previous location signal is weighted based on (1) a type of the previous location signal, and (2) a difference between a current time and the respective time for the previous location signal;
• and
• send, in response to the request, the current location prediction for the user to the requesting service.

A system comprising:

• one or more processors;
• and
• a memory coupled to the processors comprising instructions executable by the processors, the processors being operable when executing the instructions to:
• receive, from a requesting service, a request for a location prediction for a user;
• generate a current location prediction from a plurality of previous location signals, wherein each previous location signal comprises an indication of the user's location at a respective time prior to a predetermined time span, and wherein each previous location signal is weighted based on (1) a type of the previous location signal, and (2) a difference between a current time and the respective time for the previous location signal;
• and
• send, in response to the request, the current location prediction for the user to the requesting service.