help: Organize and extend guide for moderating open organizations.

help/moderating-open-organizations.md

@@ -7,14 +7,29 @@ Moderation is a big part of making an open community work.
 ## Prevention
 
 Zulip has many features designed to simplify moderation by preventing
-problematic behavior:
+problematic behavior.
 
-* [Disallow disposable email addresses](/help/restrict-account-creation#dont-allow-disposable-domains)
-  or [require users to log in via GitHub or GitLab](/help/configure-authentication-methods).
-* Restrict who can [create streams](/help/configure-who-can-create-streams),
-  [create bots](/help/restrict-bot-creation), [send direct
-  messages](/help/restrict-direct-messages), or
-  [add custom emoji](/help/custom-emoji#change-who-can-add-custom-emoji).
+### Manage new users
+
+* Link to a code of conduct in your
+  [organization description](/help/create-your-organization-profile)
+  (displayed on the registration page).
+* [Disallow disposable email
+  addresses](/help/restrict-account-creation#dont-allow-disposable-domains)
+  or [limit authentication
+  methods](/help/configure-authentication-methods) to increase the
+  effort for a bad actor to replace a banned account.
+* Add a [waiting period](/help/restrict-permissions-of-new-members) before
+  new users can take disruptive actions.
+* Monitor new users by enabling [new user
+  announcements](/help/configure-notification-bot#new-user-announcements).
+
+### Restrict permissions for making changes
+
+* Restrict who can [create streams](/help/configure-who-can-create-streams), or
+  monitor new streams by enabling [new stream
+  announcements](/help/configure-notification-bot#new-stream-announcements).
+* Restrict who can [add custom emoji](/help/custom-emoji#change-who-can-add-custom-emoji).
 * Restrict who can [move messages to another
   stream](/help/restrict-moving-messages#configure-who-can-move-messages-to-another-stream),
   and set a [time
@@ -25,18 +40,19 @@ problematic behavior:
   and
   [delete](/help/restrict-message-editing-and-deletion#configure-message-deletion-permissions)
   their own messages, and set time limits on message editing and deletion.
-* Link to a code of conduct in your
-  [organization description](/help/create-your-organization-profile)
-  (displayed on the registration page).
-* Create a [default stream](/help/set-default-streams-for-new-users)
-  for announcements where [only admins can
-  post](/help/stream-sending-policy).
-* Add a [waiting period](/help/restrict-permissions-of-new-members) before
-  new users can take disruptive actions.
+* If you are concerned about impersonation, you can [prevent users from
+  changing their name](/help/restrict-name-and-email-changes).
+
+### Minimize spam
+
 * [Configure email visibility](/help/configure-email-visibility)
   to prevent off-platform spam.
 * [Restrict wildcard mentions](/help/restrict-wildcard-mentions)
   so only [moderators](/help/roles-and-permissions) can mention everyone in your organization.
+* Create a [default stream](/help/set-default-streams-for-new-users)
+  for announcements where [only admins can
+  post](/help/stream-sending-policy).
+* Restrict who can [send direct messages](/help/restrict-direct-messages).
 
 ## Response
 
@@ -48,17 +64,16 @@ organization's policy choices.
   harassment that moderators have not yet addressed, or [collapse
   individual messages](/help/collapse-a-message) that they don't want
   to see.
-* [Ban (deactivate) users](/help/deactivate-or-reactivate-a-user) acting in
-  bad faith. You can reactivate them later if they repent.
-* Investigate behavior using the `streams:public
-  sender:user@example.com` [search
-  operators](/help/search-for-messages) to find all messages sent by a
-  user.
+* [Ban (deactivate) users](/help/deactivate-or-reactivate-a-user) acting in bad
+  faith. They will not be able to rejoin using the same email address, unless
+  their account is reactivated by an administrator.
+* Investigate behavior by [viewing messages sent by a
+  user](/help/view-messages-sent-by-a-user).
 * Delete messages, [archive streams](/help/archive-a-stream), and
   [unsubscribe users from streams](/help/add-or-remove-users-from-a-stream).
 * [Move topics](/help/rename-a-topic), including between streams, when
   users start conversations in the wrong place.
-* [Change users' names](/help/change-a-users-name) (e.g. to "Name (Spammer)")
+* [Change users' names](/help/change-a-users-name) (e.g., to "Name (Spammer)")
   for users who sent spam direct messages to many community members.
 * [Deactivate bots](/help/deactivate-or-reactivate-a-bot) or
   [deactivate custom emoji](/help/custom-emoji#deactivate-custom-emoji).