Sure, but that's telcos and the local law enforcement. It's not google, facebook, 500 advertising networks and a whole pile of other parties.

It's also not accurate to within enough resolution start targeting advertising and other nuisance information at me even if there was a way to present me that (which there isn't).

I'm well aware of the power of triangulation, I used to go fox hunting.

http://www.homingin.com/