Like sending you gifts via Amazon? Or exposing your address when then send any mail at all? Your address is public record this seems like not something you need to concerned about.
No they are not. I don't know why you and people keep telling me this. You can try to look up my address and if you're doing it on the internet with some stupid private, non-governmental institutions and data brokers that collected data without my consent, you're likely to only find a bunch of addresses associated with my name that are NOT actually where I live.
the tinfoil hat probably isn't warranted in this case, but as a general principle, I try to let my friends make their own decisions around privacy.