Deleting a whole forum or gallery post deletes its replies too. If you delete only your opening message after others have replied, the post stays and says the original message was deleted. Posts and threads open at your first unread reply with its New line, a link to a reply opens at that reply, and a post’s reply box stays at the bottom of the screen.
Signing up for Kemble Circle no longer makes you create a community: you start in Home. If you are removed from a community while you are in it, you are taken to Home and told why. Forum cards offer Follow or Unfollow as the case may be, a moderator is told before editing a higher-ranked member’s message that they cannot, and a stream you watch can be zoomed with Ctrl and the wheel or a trackpad pinch.