Looking at that privacy policy, and it looks like exactly what they should be doing. There isn't much of a point in keeping personally identifiable information

Looking at that privacy policy, and it looks like exactly what they should be doing. There isn't much of a point in keeping personally identifiable information beyond a certain point, at least not something which directly leads back to you. The only data analysis that would benefit from keeping identifying information would be to create a model for how users go about the internet, and google already has some very good models of that. This is just conjecture, but I would assume that being able to create geographic based models is far more useful than per-user models, which is something they keep.