See when it comes to Facebook/twitter only what I WANT to become public, is public. I mean I only post on facebook/twitter what I want the world to see. Lets assume everything is public. While with google I am betting they can know where I live without any sort of geolocation gps or any other technology, because they will know what I search for, where I go (directions on google maps), when I go where I go, where I work, etc. I am betting they can recite my life better than I remember it.
That I have a problem with. And pretty much everything I do online feeds google. And this applies to many online companies, google just does it better.
The days of "lets not be evil, lets be awesome" are easily replaced by "lets make money!"