Ah, I finally got the Geocoding right! I was wondering why the pawn always jumped to the nearest known location or why it always gave the nearest known location although I put the pawn in the middle of nowhere. After examining lots of example's on Google's website I finally got it : the real geocodes are in the response.name field. So now I return those to the caller - in this case SetEXIFData.
You do not need to update; it's all on the web-server side of things.
