Yes it is tough to decide and control sometimes, and its not always big brother I know of people who have the tracking feature turne don for their spouses phone sp they can track where they are 24/7, to me that shows there are much larger issues with the relationship but thats not for me to say but I would never do that myself
Google and other sites use your location, browsing history etc to know what to recommend for you in the adverts.
And really in all honesty no matter what setting you have on your phone it can be tracked to a degree, it really comes down to what your willing to accept is happening and then make an informed decision
I am pretty open in my settings myself, but thats just me
Ohhh yes, this is one other thing I got to know sometime back. Here in Oman the service provider gives this service of tracking your wife's phone, that's utter disgusting. Even my husband was given that option, he just slammed it :-)
Yes I think it is absolutly disgusting