diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e0e18329..903ecbf89 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [1.125.0] - Not released
 ### Added
+- The site administrator can now define a list of "privacy control groups" in
+  the config (the _privacyControlGroups_ entry). These groups will be always
+  shown in the feed selector of new or existing posts. The pages of such groups
+  do not show posts by default, and such groups cannot be subscribed to.
 - Support for the new "Notify of new comments" feature:
   - User can now turn on/off notification for new comments on the specific post
     via the "More" menu item;
diff --git a/config/default.js b/config/default.js
index a37939e79..cd2536855 100644
--- a/config/default.js
+++ b/config/default.js
@@ -174,4 +174,13 @@ export default {
       boostyProject: null,
     },
   },
+
+  privacyControlGroups: {
+    hidePosts: true, // Hide posts on these groups pages
+    disableSubscriptions: true, // Disable subscriptions on these groups
+    groups: {
+      // Define groups like this:
+      // 'public-groupname': { label: 'Makes post public', privacy: 'public' }
+    },
+  },
 };
diff --git a/src/components/feeds-selector/options.jsx b/src/components/feeds-selector/options.jsx
index ab789329e..5fc0f6919 100644
--- a/src/components/feeds-selector/options.jsx
+++ b/src/components/feeds-selector/options.jsx
@@ -1,3 +1,4 @@
+/* global CONFIG */
 import {
   faGlobeAmericas,
   faHome,
@@ -8,10 +9,8 @@ import {
   faUserFriends,
   faUserSlash,
   faExternalLinkAlt,
-  //  faUsers,
-  //  faUsersSlash,
 } from '@fortawesome/free-solid-svg-icons';
-import { uniq } from 'lodash-es';
+import { uniq, uniqBy } from 'lodash-es';
 import { useEffect, useMemo } from 'react';
 import { shallowEqual, useDispatch, useSelector } from 'react-redux';
 import cn from 'classnames';
@@ -121,10 +120,15 @@ export function useSelectedOptions(usernames, fixedFeedNames) {
 
   const groupOptions = useMemo(
     () =>
-      mySubscriptions
-        .filter((u) => u?.type === 'group' && u.youCan.includes('post'))
-        .map((u) => toOption(u, me))
-        .sort(compareOptions),
+      uniqBy(
+        [
+          ...privacyControlOptions(),
+          ...mySubscriptions
+            .filter((u) => u?.type === 'group' && u.youCan.includes('post'))
+            .map((u) => toOption(u, me)),
+        ],
+        'value',
+      ).sort(compareOptions),
     [me, mySubscriptions],
   );
 
@@ -218,3 +222,14 @@ export function toOption(user, me) {
     privacy: user.type === 'group' || isMe ? getPrivacy(user) : 'user',
   };
 }
+
+function privacyControlOptions() {
+  return [...Object.entries(CONFIG.privacyControlGroups.groups)].map(
+    ([value, { label, privacy }]) => ({
+      label,
+      value,
+      privacy,
+      type: ACC_GROUP,
+    }),
+  );
+}
diff --git a/src/components/user-card.jsx b/src/components/user-card.jsx
index 14311ead5..0e79e77a5 100644
--- a/src/components/user-card.jsx
+++ b/src/components/user-card.jsx
@@ -1,3 +1,4 @@
+/* global CONFIG */
 import { Component, createRef, useCallback } from 'react';
 import { Link } from 'react-router';
 import { connect } from 'react-redux';
@@ -81,6 +82,10 @@ class UserCard extends Component {
   renderSubscribeBlock() {
     const { props } = this;
 
+    const allowToSubscribe =
+      !CONFIG.privacyControlGroups.disableSubscriptions ||
+      !CONFIG.privacyControlGroups.groups[props.user.username];
+
     if (props.subscribed) {
       return (
         <span className="user-card-action">
@@ -98,11 +103,13 @@ class UserCard extends Component {
           </span>
         );
       }
-      return (
-        <span className="user-card-action">
-          <a onClick={this.handleSubscribeClick}>Subscribe</a>
-        </span>
-      );
+      if (allowToSubscribe) {
+        return (
+          <span className="user-card-action">
+            <a onClick={this.handleSubscribeClick}>Subscribe</a>
+          </span>
+        );
+      }
     }
 
     return null;
diff --git a/src/components/user-profile-head-actions.jsx b/src/components/user-profile-head-actions.jsx
index 7347dc620..1494d78fc 100644
--- a/src/components/user-profile-head-actions.jsx
+++ b/src/components/user-profile-head-actions.jsx
@@ -1,3 +1,4 @@
+/* global CONFIG */
 import { Link } from 'react-router';
 import cn from 'classnames';
 import { faClock } from '@fortawesome/free-regular-svg-icons';
@@ -40,6 +41,10 @@ export function UserProfileHeadActions({
   const showBanDialog = useShowBanDialog(user);
   const showDisableBansDialog = useShowDisableBansDialog(user, isCurrentUserAdmin);
 
+  const allowToSubscribe =
+    !CONFIG.privacyControlGroups.disableSubscriptions ||
+    !CONFIG.privacyControlGroups.groups[user.username];
+
   return (
     <div className={styles.actions}>
       {isBanned ? (
@@ -61,7 +66,7 @@ export function UserProfileHeadActions({
                 <ActionLink {...doUnsubscribe}>Unsubscribe</ActionLink>
               </li>
             )}
-            {!user.isGone && !inSubscriptions && user.isPrivate === '0' && (
+            {!user.isGone && !inSubscriptions && user.isPrivate === '0' && allowToSubscribe && (
               <li>
                 <ActionLink {...doSubscribe}>Subscribe</ActionLink>
               </li>
diff --git a/src/components/user.jsx b/src/components/user.jsx
index deaa35e85..45e3cd484 100644
--- a/src/components/user.jsx
+++ b/src/components/user.jsx
@@ -1,5 +1,5 @@
 /* global CONFIG */
-import { useEffect, useMemo } from 'react';
+import { useCallback, useEffect, useMemo, useState } from 'react';
 import { Helmet } from 'react-helmet';
 import { connect } from 'react-redux';
 import * as _ from 'lodash-es';
@@ -19,6 +19,7 @@ import Breadcrumbs from './breadcrumbs';
 import ErrorBoundary from './error-boundary';
 import UserProfile from './user-profile';
 import UserFeed from './user-feed';
+import { ButtonLink } from './button-link';
 
 const UserHandler = (props) => {
   // Redirect to canonical username in URI (/uSErNAme/likes?offset=30 → /username/likes?offset=30)
@@ -45,6 +46,17 @@ const UserHandler = (props) => {
     props.viewUser.username,
   ]);
 
+  const [forceShowContent, setForceShowContent] = useState(false);
+  const displayPosts = useCallback(() => setForceShowContent(true), []);
+
+  const allowToPost =
+    !CONFIG.privacyControlGroups.hidePosts ||
+    !CONFIG.privacyControlGroups.groups[props.viewUser.username];
+  const showContent =
+    forceShowContent ||
+    !CONFIG.privacyControlGroups.hidePosts ||
+    !CONFIG.privacyControlGroups.groups[props.viewUser.username];
+
   const nameForTitle = useMemo(
     () =>
       props.viewUser.username === props.viewUser.screenName
@@ -87,6 +99,7 @@ const UserHandler = (props) => {
           <UserProfile
             {...props.viewUser}
             {...props.userActions}
+            canIPostHere={props.canIPostHere && allowToPost}
             user={props.user}
             sendTo={props.sendTo}
             createPost={props.createPost}
@@ -98,7 +111,21 @@ const UserHandler = (props) => {
           />
         </div>
 
-        <UserFeed {...props} />
+        {showContent ? (
+          <UserFeed {...props} />
+        ) : (
+          <div className="alert alert-warning">
+            <p>
+              You are on the <strong>{props.viewUser.username}</strong> group page. This is a
+              technical group, it just helps to customize the visibility of posts in other feeds.
+            </p>
+            <p>
+              The posts in this group itself are fairly random and not organized around any
+              particular topic. Still want to see them?{' '}
+              <ButtonLink onClick={displayPosts}>Yes, show me posts</ButtonLink>
+            </p>
+          </div>
+        )}
       </ErrorBoundary>
     </div>
   );