The privacy concern is real and not something I'd want to think about too hard myself. One night I heard sirens and checked one of the local scanner type sites. I could hear enough about the call, and that combined with a record of previous calls to that address made me wonder if I really wanted that information. Maybe some obfuscation of the previous codes to the address would have been enough to reduce the feeling of knowing too much.

None of that is to say it isn't a good idea. I appreciate the ability to see roughly what is going on when I hear sirens. Even if the sites aren't always able to show the calls. I think highway patrol doesn't show up for me.