diff --git a/conference_ops.go b/conference_ops.go
new file mode 100644
index 0000000..708521d
--- /dev/null
+++ b/conference_ops.go
@@ -0,0 +1,39 @@
+/*
+ * Amsterdam Web Communities System
+ * Copyright (c) 2025-2026 Erbosoft Metaverse Design Solutions, All Rights Reserved
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+// Package main contains the high-level Amsterdam logic.
+package main
+
+import (
+	"fmt"
+
+	"git.erbosoft.com/amy/amsterdam/database"
+	"git.erbosoft.com/amy/amsterdam/ui"
+)
+
+/* HideTopic hides or shows rthe current topic for the current user.
+ * Parameters:
+ *     ctxt - The AmContext for the request.
+ * Returns:
+ *     Command string dictating what to be rendered.
+ *     Data as a parameter for the command string.
+ *     Standard Go error status.
+ */
+func HideTopic(ctxt ui.AmContext) (string, any, error) {
+	topic := ctxt.GetScratch("currentTopic").(*database.Topic)
+	hidden, err := topic.IsHidden(ctxt.Ctx(), ctxt.CurrentUser())
+	if err != nil {
+		return ui.ErrorPage(ctxt, err)
+	}
+	err = topic.SetHidden(ctxt.Ctx(), ctxt.CurrentUser(), !hidden)
+	if err != nil {
+		return ui.ErrorPage(ctxt, err)
+	}
+	return "redirect", fmt.Sprintf("/comm/%s/conf/%s/r/%d", ctxt.CurrentCommunity().Alias, ctxt.GetScratch("currentAlias"), topic.Number), nil
+}
diff --git a/database/topic.go b/database/topic.go
index 710a758..bc49df9 100644
--- a/database/topic.go
+++ b/database/topic.go
@@ -94,6 +94,18 @@ func (t *Topic) IsHidden(ctx context.Context, u *User) (bool, error) {
 	return rc, err
 }
 
+// SetHidden sets the "hidden" state on a topic for a user.
+func (t *Topic) SetHidden(ctx context.Context, u *User, hidden bool) error {
+	rs, err := amdb.ExecContext(ctx, "UPDATE topicsettings SET hidden = ? WHERE topicid = ? AND uid = ?", hidden, t.TopicId, u.Uid)
+	if err == nil {
+		nrow, _ := rs.RowsAffected()
+		if nrow == 0 {
+			_, err = amdb.ExecContext(ctx, "INSERT INTO topicsettings (topicid, uid, hidden) VALUES (?, ?, ?)", t.TopicId, u.Uid, hidden)
+		}
+	}
+	return err
+}
+
 // TopicSettings contains per-user settings for topics, including the "last read" message pointer.
 type TopicSettings struct {
 	TopicId     int32      `db:"topicid"`      // unique ID of the topic
diff --git a/main.go b/main.go
index 0a7c056..267b36a 100644
--- a/main.go
+++ b/main.go
@@ -99,6 +99,8 @@ func setupEcho() *echo.Echo {
 	confGroup.POST("/new_topic", ui.AmWrap(NewTopic))
 	confGroup.GET("/r/:topic", ui.AmWrap(ReadPosts), ui.SetTopic)
 	confGroup.POST("/r/:topic", ui.AmWrap(PostInTopic), ui.SetTopic)
+	opsGroup := confGroup.Group("/op/:topic", ui.SetTopic)
+	opsGroup.GET("/hide", ui.AmWrap(HideTopic))
 
 	return e
 }
diff --git a/ui/views/posts.jet b/ui/views/posts.jet
index dc2825b..90a04f0 100644
--- a/ui/views/posts.jet
+++ b/ui/views/posts.jet
@@ -20,10 +20,12 @@
             <div class="flex gap-2 flex-wrap">
                 <a href="{{ topicListLink }}" 
                     class="bg-blue-600 hover:bg-blue-700 text-white px-4 py-2 rounded text-sm font-medium transition-colors">Topic List</a>
-                <a href="/TODO/hide" 
-                    class="bg-gray-600 hover:bg-gray-700 text-white px-4 py-2 rounded text-sm font-medium transition-colors">
-                    {{ if isTopicHidden }}Show Topic{{ else }}Hide Topic{{ end }}
-                </a>
+                {{ if !.CurrentUser().IsAnon }}
+                    <a href="{{ topicListLink }}/op/{{ topicNum }}/hide" 
+                        class="bg-gray-600 hover:bg-gray-700 text-white px-4 py-2 rounded text-sm font-medium transition-colors">
+                        {{ if isTopicHidden }}Show Topic{{ else }}Hide Topic{{ end }}
+                    </a>
+                {{ end }}
                 {{ if isset(urlNextTopic) }}
                     <a href="{{ urlNextTopic }}" 
                         class="bg-green-600 hover:bg-green-700 text-white px-4 py-2 rounded text-sm font-medium transition-colors">Next Topic</a>