The MacFamilyTree software will 'map' places if the GPS coordinates are provided; others might, too.
Since the Google location API provides that information (when it is utilized on Geni), and I've been told it is already being stored internally in the Geni database, it would be great if that information would be exported along with the other GEDCOM location fields. I realize it's not yet 5.5 Standard, but I'm sure that Geni, MyHeritage, Synium, and others could agree on a simple extension for providing such coordinates along with location text fields.