What does the warning mean?

You have a license plate on display for the whole world to see on every vehicle you own . That number contains your name , your address , your vehicles VIN number , year , make and model. So do you cover up your plate number when you take your car out? No , someone will call the cops on you because it looks suspicious. I will post all my VIN numbers and plate numbers all day long and I can promise nobody is going to show up at my house trying to steal my ****. That's just ludicrous.