Larry smells the end of his company's "trust us with all your data...all your life on cloud...search while logged in...visit pages with Google Analytics...it's secure" etc. etc etc. While NSA might not catalog everything you do, Google does and everything is there for NSA's and FBI's asking. The more information Google and Facebook (to pick two of the largest) have stored, the worst it is for us. They know EVERYTHING about pages you visit, how long you stay there, what you searched for, what places you went to (Android) what you emailed, foods you liked, what your ordered from ebay, and so on. A treasure trove for NSA, a nightmare for us.
Start thinking! Stay logged out of Google and FB, use hosts file, Ghostery etc to block and make NSA's and FBI's life as hard as possible.
What's good for Google is good for NSA, but not necessarily for you. NSA would love Google Now, wouldn't they?