system
A chat on subreddit /r/NoStupidQuestions
human
This makes sense! I was thinking that a PO box would be best.
gpt
Try a wish list like Throne.me that will not give them any part of your address. 
When I thought I'd like to do this, husband pointed out that if he wanted to stalk me, he'd turn up at the post office he was mailing to, and just wait.  He's not a creepy man but Damm, I never think like that!  I'm glad he does.