Read "When Wikileaks Met Google" and decide for yourself.
I'm trying to grasp what has to do that book with Apple being safer from FISA orders
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Google isn't selling 'random' statistics. That would be ineffective and worthless. They are selling highly specific profile information that results in higher click-through rates on the ads. A lot of people seem to be more than willing to give up their privacy in exchange for being the recipient of targeted advertising. Now that is sad.
Google does not sell any profile