I notice that a lot of people posting pictures of their cars will mask their licence plate. Even Google will fuzz out plates on Street View. In contrast, people with personalized plates will proudly show it off in pictures and even here in forum avatars. Why is this? Licence plates are in plain view everywhere. I probably capture hundreds every day with my car's dash cam. What can someone do knowing your plate number? I don't think anyone other than police can match a plate with an owner and address.