content: If I was selling doors I would know which size door to selectively advertise to them. By knowing their neighborhood, and the aesthetics therein (if you think google maps was just to give a GPS guide to people you are dumb), I can now target the person with a door that matches the neighborhood aesthetics, and is sized correctly, which also has the highest profit margin.  If I was selling large print pictures, knowing the wall dimensions, and where the room entrances are would let me offer prints sized to capture attention as people enter the room.  I spent 30 seconds thinking about it.  I could probably come up with at least 100 ways by the end of the day.