I'm not in panic mode, and I do "hide myself" with due diligence. I am, however, reminded of the days of yore when "I'm from the government and I'm here to help you" was greeted with chuckles (or guns). These days on the web google and, sadly for enabling, FireFox seem in that other role.
I think (personal opinion) the way to do it is:
"Hey, kiddie! We have nifty keen geolocation tools and can find you a wifi. Want us to do it?" and let the kiddies decide. Better would be, in addition to above:
"And to make sure we can do that we'll track all your info but we don't give it away (we promise, really! believe us!) if you'll just say yes."
And we all know the vast majority of the unwashed masses (euphemism) will happily click on that and we're exactly where we are now. FireFox and google knows that.
We live in an age of idiots.