Inside the relay list event, it will be blank. Clients should not show blank to end users. Blank doesn't mean anything to an end user.

It is very hard for end users right now to pick inboxes. I don't pay relays in order to tag one of their users, so they simply don't get the note (well they do because of blastr). We need to push on technology that makes it easier for end users to pick appropriate relays, without picking them for them.