Some context:
My primary interest is IP geolocation data related to mobile SPVs. That's where I see the really big value in Big data.
In theory, we should be able to deploy 'let this app use my location' which is accurate to within a few meters.
User money spending habits + location = holy grail for, erm, everyone.
Yes, I'm aware of that. Including SPV nodes increases the reach of the "scanned area".
But then, as a precaution, should we even communicate to the outside world (big data market) if a user was sitting behind a mobile SPV or a desktop pc's full node or whatever other means of access he used?
We shouldn't.
But back to geolocation: is this really accurate within a few meters? Maybe in some urban areas, but this can fluctuate wildly.