|You have no reasonable expectation of privacy when using their service. Your neighbors may have easy access to all your actions.|
They can send that data to police. Police just can't demand it without a warrant is the difference. If I suspected you of a heinous crime I can send all that information to the police, by law I am required to do that.
Generally company's won't bother with any request for information unless they can make a buck from it. So, your data would more likely end up in some sales database.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.