IMO, the most game changing feature announced today is 'Now on tap'<p>Google isn't releasing more details on it, but with it, Google would be able to understand what you do, when you do it, who your pals are, who you go out to movies with, who you chat with the most, are you looking to quit your job, are you about to break up, are you going through a depression and so on...<p>They haven't revealed anything about how exactly 'Now on tap' works...but the potential for data collection is enormous. With 'Now on tap' they promise to do 'searches' based on the context (which is derived from the contents in the app that's showing on-screen). So no matter what app you're using, Google will get its hand on the data. It sounds nightmarish and exciting at the same time.