I usually don't login to google, hence my original assertion. I've not seen any evidence that Google actually do any analysis that is quite that smart. My bes

I usually don't login to google, hence my original assertion. I've not seen any evidence that Google actually do any analysis that is quite that smart. My best guess is that they just do keyword analysis. This is something of an educated guess, because I know someone who worked on keyword extraction at Google. Even if Google _could_ extract that kind of rich data you describe, I very much doubt they have done it to the point where it is in a format that is suitable for providing targeted ads (beyond what they already do, which as I said, I would guess is keyword-based). The difference with something like Amazon's data or Google Analytics is that it is structured data that is already perfect for providing recommendations and targeted ads.