If you go to Google Search App> Settings> Google Search, you will see a header labeled "Google Account". Underneath will be a google email address. Now, I've spent about a day wracking my brain to figure out what that even means. I checked google, and they say that it is the account "used with Google Search and Google Now". But, when I go to the google site in my browser, I can see that I am not signed into an account, because I see "Sign In" at the bottom of the page. So what does that email address under "Google Account" even do? What does it mean? Edit: the email address is of course mine.