reverse autocomplete

Feature I see is that user fills in cck text address fields like street name, city, country and that data is inserted into existing reverse geocoding field 'Address' and that rendered on map.

Workflow would be: fill in address - check map if point is located correctly - fix point location if needed.

Additional bonus would be to save flag of some kind that point location has been edited and is not the same as geocoding, so that projects would be able to contribute back to mapping communities all the points that geocoding got wrong.