In a nutshell, instead of separating all of your profiles on each of its tools (like search, YouTube, G+, and so on), Google will now combine all of that information into one single profile. This may or may not appeal to you.
If you decide it is fine. Go ahead like nothing has changed!
If you are bothered by that, here are some tips:
- Don’t sign in to the sites to use them. If you are not signed in via your Google or Gmail account, then they cannot track your history and assign it to you.
- If you want or need to be signed in, you can change what Google has in your history and stop them from gathering information by going to your Web History and “pausing” it and deleting it. This doesn’t prevent it from totally gathering the information and it can still be given up to law enforcement, according to the Electronic Frontier Foundation, but it cause it to be partially anonymized after 18 months. Here’s how to remove your web history (from EFF)
- You can delete your viewing history on YouTube in a similar manner:
- Go to YouTube (after signing into Google)
- Under your profile in the top right, go to Video Manager.
- Click “History” on the left of the page and then “Clear Viewing History”
- Refresh the page and then click “Pause Viewing History”
- Do the same for your search history by clicking on “Clear Search History” and doing the same steps.
For more information on Google’s announcements and some explanations and responses, here are a few resources:
Overview of Policies and Principles (Google)