[aaron695]

The Australian tectonic plates move about 7cm a year, if you didn't adjust for it they'd be losing 2-5 thousand dollars a year as the fence moved in many suburban homes. Of course you'd gain it on the other side.

Google needs to be dealing with it constantly, you'd be able to observe more errors on Google maps, ie. look at Google directions and how often mistakes are made, if it wasn't updated monthly? I'd guess yearly is not enough.

Most of this article seems to be about other issues.

[nobodyknowin]

Yep the monuments on the plates here in USA have actual published velocities.

Which means yo can model what the coordinates should be after some previous survey and go check them.

Pretty cool!