You see, if you start thinking, what they have, your email, most probably your addrees, country, city, i think half the internet have google ads links, now they ask for your cell phone number in youtube "for you account safety" and to load longer videos. Add the facebook twitter combo. What they do with all that info idk most probably use it to make money.
But is not a extreme thing to say that if they want they can put your name on google earth in front of your house with what videos you are seeing on youtube how many hours of internet per day you use, what sites you like most...
