That I did not know. I've always been on PS4, so I kind of assumed it was the same way for both. But that is definitely good to know. Even if it is a bad idea because you could blacklist/avoid someone to your hearts content, and not realize who it is you are adding on PSN if you never voice chat them/send messages(one reason I always appear offline...that and people like to send me tons of invites while watching movies)