It would have come in very handy in Iraq for pinpointing insurgents. (Their address system in the mahalas borders between confusing to non-existent.)
In America, with a database of everyone's home location, I could, in theory, take a person and his known associates, and map out their locations for a variety of purposes.
With a bit of Google Earth mapping, I could equip a poorly trained mob with clear pictures of their target house.
With access to law enforcement databases, I could get you far more detailed information for detailed surveillance. Make, model and license of car, for instance.
With the right air dropped munition, I could kill everyone inside your house and not scratch your neighbor's paint.
One B-52 fully loaded could control a large city using these coordinates.