The new smart phones can use the GPS feature to tag the exact longitude and latitude of where a picture was taken. Can you imagine how valuable that information would be for a future genealogist. It would make it possible to determine if that mountain backdrop was the Grand Tetons or the Occhr Mountains.
Geo-tagging pictures will give hints into how we lived as well as our lives for our descendants. I know the technology today will make it easier on future generations but only if we use it in our research!