This is the best sub section I could find for this thread. It's not really something for "General Chat" (not electronic specific or a conversation at all/no chat), and nothing for the other section either.
Please don't ridicule me.
So, how to "unsubscribe" from forum threads that appear in your "Show new replies to your posts." list? There's a "notify" button, that one is always off until I click it. Other fora have a separate "Unsubscribe" button for this.