> I also don't think such a sparse and context dependent data like analytics would help that much to Google for displaying ads. Sorry but I think that is a ver

> I also don't think such a sparse and context dependent data like analytics would help that much to Google for displaying ads. Sorry but I think that is a very weird statement. Google Analytics collects a LOT of datapoints. Not only can they track users no matter how they get to that page, they can track how they behave on the page itself. They can track what content is interesting for the user (they know what the page contains after all) and how long you actually stay on the website. They can collect all of that data, without the user knowing and the user himself doesn't even need to use a single Google product. I wouldn't exactly describe that as sparse data collection and the context dependent tracking is what makes Google Ads context relevant.