it really depends. like i get people take pics of my car almost everywhere i go. if ever i catch the person taking pics, i politely ask them to delete my plates if they will post it online. other than that its completely fine to take pics out in public. however if its at that persons residence it would be nice to get permission first to do that. if found random pics of my car pop up on the web. luckily most of them are nice enough to delete the plates when they post it up.