People talk about data privacy with google. The thing is that all of that data was out there already, just hard to find. Most of these online detective things just skim publicly accessible data.
There are bigger threats to anonymity than Google and bigger threats to privacy. The billion and 1 user ids and logins you need to access online accounts. The little shopping cards that everyone carries on there keyrings to save 35 cents on a far of peanut butter.
Google is growing at a phenomenal rate and is spreading into other fields. Like Andrew Carnegie when he had most of the steal production in the US and little hope of getting more started to buy iron mines and coal mines as well as railroads. Google is loosing focus and will have to split or shrink.