fwiw, this started life as an empty post when I unchecked the <Notify me of follow-up replies via email> box and pressed <Submit>.
Apparently, you just have to uncheck the box – pressing <submit> not required (or desirable).
But since I’m here, thanks for that Rob. Looks interesting but don’t know why people seem to have to try to “break” everything they come across. They’re mental institution fodder to me.