Whoever owns the relay. It’s their computer. The note ID isn’t about access but cryptographic verification.
Discussion
exactly. your key is thus simply proof of stake because the work is spirited away to another server. so again: a highlighter is a snitch tag for discovery stored externally from your custody.
If I understand what you mean correctly then kind of. It’s a way for you to share interesting thoughts and ideas you’ve found around the web with others. The spiriting away to other people’s computers is optional though. If you’re worried about relays removing your notes than you can spirit it away to a computer you control.