My giveaway would be my big blue van, unique in all the world, and probably visible from the Moon.
If nobody is tapping into my data stream, or even logging my network name, but just navigating from the existence of a basic address code, it's no problem as far as I'm concerned.
It's like a seaside semaphore light using a secret code that is being used by ships solely to avoid the rocks.
Many nice things in our town have come from Google tax money and sheer generosity. I'm a fan. But they still bear watching.