You are so desperate to justify your thinking (not to me, mind you, to yourself) that you grasp for every straw possible, forgetting what the question was about along the way.<p>This particular question was about how you formed your opinion about Google using GA data to build advertising profiles. My opinion is formed based on my expertise in mining many terabytes of data and my experience in sourcing this data. Based on that experience I can say that GA data is not of interest to google because it is unreliable and they have better data already. Even if it was, they would have to stop themselves because it is just too damn risky (bankruptcy level risk) to use it.<p>So my opinion stems from my experience in this very business. And your opinion stems from where exactly? This is what I&#x27;m trying to show you. You have 0 idea what you are talking about but insist that you are right. Even further, you outright accuse google of lying when they say GA data is not used unless the webmaster explicitly opts in to share it. Why do they have that control in first place then?<p>Oh and btw, that quote about relevant search results and ads... you might want to check where it comes from before basing arguments off it. You know, if you want to have a coherent argument and not some tin foil conspiracy theory grasping desperately for whatever it can catch. Checking facts is a good thing, don&#x27;t you agree?<p>Anyway, you will either admit it to yourself tomorrow, or you won&#x27;t. I don&#x27;t particularly care. I just wanted to see how far you will go in your justification attempt. Remember that just because you are allowed to have an opinion does not mean you must have one.