I’ve updated the geocoder to include a “reverse geocoding” mode that can find an address for a given set of Longitude,Latitude points. Why Lon,Lat vs. Lat,Lon? That’s how I set everything else up, so there must have been some good reason. The code also now gives a warning if you try and run it on Chrome — use Firefox or IE, the performance will be the same, and they don’t have the weird rules about local files that Chrome does.