Re: And that's exactly why...
Just having a mobile with us takes away privacy, the base stations, wifi, whatever track us, and that data alone can reveal more than we realise.
I don't do social media, other than a few sites like El Reg, and I try and keep details of me on the web to a minimum, but like it or loathe it human data is probably the fastest growing, and given the market caps, most profitable, commodity on the planet.
I'm waiting till the Googles and Facebooks try and market the intrusion as motivational and supportive "here at global spycorp we're interested in _you_ and we'll keep an eye out for you all the time", but hopefully as more folk learn just what is being done with the story of their lives, they'll realise it has value and guard it more safely.
Biting the hand that feeds IT
