Quite a few people mention the pictures were taken with a camera and uploaded at a later date, so GPS wouldn't have been a factor. With the amount of data Facebook has I wouldn't be surprised that they could do more than just use GPS information to place locations.
I'm sure there are other technologies which can be used for geolocalization and can achieve similar "performances" (I'm
thinking about WIFI networks or IP, in some cases).
Still, I wouldn't expect a digital camera to put those informations in the EXIF (assuming it does have a WIFI and/or an IP address)
Also, to me Facebook doesn't seem to be using any magical machine learning algorithm capable to recognize the location of a PIC from a face, it never did on my PICs, not even when there were landscapes in it.
The guy could instead have uploaded the photo using a smartphone which added the GPS coordinates.
But what do YOU think instead? How does that work? Is it working also for your uploads?
