The new policy starts at the beginning of March. At that time, the company will streamline its offering and track the actions of users as they use any or all of the products they have available. Since these products number more than five dozen, you can see how big a change this is.
It is easy to see how this would simplify things. However, it will also mean that Google can advertise to people and provide them with information far more accurately and easily than they do now. For example if you look for specific things on YouTube, you may find that when you use another of their sites or products, ads for the items you searched for previously pop up. Google thinks this is a good service, but many believe it is overly intrusive.
There is no way to opt out of the service unless you decide to close your account(s) with Google. So many people will be likely to tolerate them, which is probably what the search engine giant is hoping.