Today’s the day Google’s broad new privacy policy goes into effect. European regulators are claiming it violates data protection laws, but it’s here and it may be here to stay.

There are some not-completely-foolproof ways to hide from Google, but first let’s talk about what’s changed. Prior to today, Google had more than 70 privacy policies for its various products. But with the company trying to create a seamless experience across search, Gmail, Google+, Google Docs, Picasa, and much more, Google is consolidating the majority of its policies down into just one document covering most of its products. This will make it easier for Google to track users for the purpose of serving up personalized ads.

“The main change is for users with Google Accounts,” Google said at the time of its January announcement. “Our new Privacy Policy makes clear that, if you’re signed in, we may combine information you’ve provided from one service with information from other services. In short, we’ll treat you as a single user across all our products, which will mean a simpler, more intuitive Google experience.”

An example? Google search results can already bring up Google+ posts or photos that have been shared with the user. “But there’s so much more that Google can do to help you by sharing more of your information with … well, you,” Google said. “We can make search better—figuring out what you really mean when you type in Apple, Jaguar or Pink. We can provide more relevant ads too. For example, it’s January, but maybe you’re not a gym person, so fitness ads aren’t that useful to you. We can provide reminders that you’re going to be late for a meeting based on your location, your calendar and an understanding of what the traffic is like that day. Or ensure that our spelling suggestions, even for your friends’ names, are accurate because you’ve typed them before.”