diff --git a/public/language/en-GB/topic.json b/public/language/en-GB/topic.json
index d7533b80f3..ac69995c89 100644
--- a/public/language/en-GB/topic.json
+++ b/public/language/en-GB/topic.json
@@ -254,6 +254,7 @@
 	"no-more-next-post": "You don't have more posts in this topic",
 	"open-composer": "Open composer",
 	"post-quick-reply": "Quick reply",
+	"post-quick-create": "Quick post",
 
 	"navigator.index": "Post %1 of %2",
 	"navigator.unread": "%1 unread",
diff --git a/public/src/client/world.js b/public/src/client/world.js
index adf6925e57..8d7a11b927 100644
--- a/public/src/client/world.js
+++ b/public/src/client/world.js
@@ -3,8 +3,10 @@
 define('forum/world', [
 	'forum/infinitescroll', 'search', 'sort', 'hooks',
 	'alerts', 'api', 'bootbox', 'helpers', 'forum/category/tools',
-	'translator',
-], function (infinitescroll, search, sort, hooks, alerts, api, bootbox, helpers, categoryTools, translator) {
+	'translator', 'quickreply',
+], function (infinitescroll, search, sort, hooks,
+	alerts, api, bootbox, helpers, categoryTools,
+	translator, quickreply) {
 	const World = {};
 
 	$(window).on('action:ajaxify.start', function () {
@@ -14,6 +16,7 @@ define('forum/world', [
 	World.init = function () {
 		app.enterRoom('world');
 		categoryTools.init($('#world-feed'));
+		quickreply.init();
 
 		sort.handleSort('categoryTopicSort', 'world');
 
diff --git a/public/src/modules/quickreply.js b/public/src/modules/quickreply.js
index 3293bb3275..602c1ace05 100644
--- a/public/src/modules/quickreply.js
+++ b/public/src/modules/quickreply.js
@@ -69,6 +69,18 @@ define('quickreply', [
 				handle: undefined,
 				content: replyMsg,
 			};
+			let replyRoute = '/topics';
+			switch(ajaxify.data.template.name) {
+				case 'topic':
+					replyData.tid = ajaxify.data.tid;
+					replyRoute = `/topics/${ajaxify.data.tid}`;
+					break;
+
+				case 'world':
+					replyData.cid = '-1';
+					break;
+			}
+
 			const replyLen = replyMsg.length;
 			if (replyLen < parseInt(config.minimumPostLength, 10)) {
 				return alerts.error('[[error:content-too-short, ' + config.minimumPostLength + ']]');
@@ -78,7 +90,7 @@ define('quickreply', [
 
 			ready = false;
 			element.val('');
-			api.post(`/topics/${ajaxify.data.tid}`, replyData, function (err, data) {
+			api.post(replyRoute, replyData, function (err, data) {
 				ready = true;
 				if (err) {
 					element.val(replyMsg);
diff --git a/src/controllers/activitypub/topics.js b/src/controllers/activitypub/topics.js
index 11cc8368f4..d780f954c7 100644
--- a/src/controllers/activitypub/topics.js
+++ b/src/controllers/activitypub/topics.js
@@ -7,6 +7,7 @@ const user = require('../../user');
 const topics = require('../../topics');
 const posts = require('../../posts');
 const categories = require('../../categories');
+const privileges = require('../../privileges');
 const translator = require('../../translator');
 const pagination = require('../../pagination');
 const utils = require('../../utils');
@@ -24,7 +25,10 @@ controller.list = async function (req, res) {
 	const start = Math.max(0, (page - 1) * topicsPerPage);
 	const stop = start + topicsPerPage - 1;
 
-	const userSettings = await user.getSettings(req.uid);
+	const [userSettings, userPrivileges] = await Promise.all([
+		user.getSettings(req.uid),
+		privileges.categories.get('-1', req.uid),
+	]);
 	const targetUid = await user.getUidByUserslug(req.query.author);
 	let cidQuery = {
 		uid: req.uid,
@@ -40,6 +44,7 @@ controller.list = async function (req, res) {
 	const data = await categories.getCategoryById(cidQuery);
 	delete data.children;
 	data.sort = req.query.sort;
+	data.privileges = userPrivileges;
 
 	let tids;
 	let topicCount;
diff --git a/src/routes/write/topics.js b/src/routes/write/topics.js
index a1c7810558..107fdac8bd 100644
--- a/src/routes/write/topics.js
+++ b/src/routes/write/topics.js
@@ -10,7 +10,7 @@ const { setupApiRoute } = routeHelpers;
 module.exports = function () {
 	const middlewares = [middleware.ensureLoggedIn];
 
-	setupApiRoute(router, 'post', '/', [middleware.checkRequired.bind(null, ['cid', 'title', 'content'])], controllers.write.topics.create);
+	setupApiRoute(router, 'post', '/', [middleware.checkRequired.bind(null, ['cid', 'content'])], controllers.write.topics.create);
 	setupApiRoute(router, 'get', '/:tid', [], controllers.write.topics.get);
 	setupApiRoute(router, 'post', '/:tid', [middleware.checkRequired.bind(null, ['content']), middleware.assert.topic], controllers.write.topics.reply);
 	setupApiRoute(router, 'delete', '/:tid', [...middlewares], controllers.write.topics.purge);
diff --git a/src/topics/create.js b/src/topics/create.js
index 56fbe49830..f4a5ac8b04 100644
--- a/src/topics/create.js
+++ b/src/topics/create.js
@@ -3,6 +3,7 @@
 
 const _ = require('lodash');
 const winston = require('winston');
+const tokenizer = require('sbd');
 
 const db = require('../database');
 const utils = require('../utils');
@@ -102,9 +103,17 @@ module.exports = function (Topics) {
 			privileges.users.isAdministrator(uid),
 		]);
 
-		data.title = String(data.title).trim();
 		data.tags = data.tags || [];
 		data.content = String(data.content || '').trimEnd();
+
+		if (data.title) {
+			data.title = String(data.title).trim();
+		} else {
+			const sentences = tokenizer.sentences(data.content, { sanitize: true, newline_boundaries: true });
+			data.title = sentences.shift();
+			data.generatedTitle = 1;
+		}
+
 		if (!isAdmin) {
 			Topics.checkTitle(data.title);
 		}
@@ -259,6 +268,7 @@ module.exports = function (Topics) {
 			Topics.addParentPosts([postData], uid),
 			Topics.syncBacklinks(postData),
 			Topics.markAsRead([tid], uid),
+			activitypub.notes.syncUserInboxes(tid, uid),
 		]);
 
 		// Returned data is a superset of post summary data