Once the policy goes live, all of your existing browsing history gets added into the collection. Some people don’t keep history and others wipe it every now and then – but a majority of you couldn’t be bothered to do such tasks (myself included) so you most likely have years of saved up data that Google would love to get its hands on.
What sort of data? It’s not just the sites you’ve been to. It’s what you’ve searched for, where you searched for it, your age, your gender – you’d be surprised at the kind of personal data about you that can be mined. That’s why everyone is freaking out about privacy violations.
Once the policy is live, there’s no turning back. You can’t opt out of Google collecting all of your data unless you say goodbye to Google altogether. Good luck with that. To use anything by Google means agreeing to this policy, which pretty much signs your life away.
Google’s motto is “don’t be evil” remember? No? Understandable. Save yourself some hassle and delete your browsing history.
Now Google will still collect data but it will all be anonymous. You won’t get customized search results—Google’s goal to serve you better—but your privacy stays private. As it should be.