diff --git a/app/activitypub/util.py b/app/activitypub/util.py
index 047d617f..ba92da49 100644
--- a/app/activitypub/util.py
+++ b/app/activitypub/util.py
@@ -1654,17 +1654,19 @@ def create_post(activity_log: ActivityPubLog, community: Community, request_json
         activity_log.exception_message = 'Community is local only, post discarded'
         activity_log.result = 'ignored'
         return None
+    microblog = False
     if 'name' not in request_json['object']:    # Microblog posts
         if 'content' in request_json['object'] and request_json['object']['content'] is not None:
-            name = "[Microblog]"
+            title = "[Microblog]"
+            microblog = True
         else:
             return None
     else:
-        name = request_json['object']['name']
+        title = request_json['object']['name']
 
-    nsfl_in_title = '[NSFL]' in name.upper() or '(NSFL)' in name.upper()
+    nsfl_in_title = '[NSFL]' in title.upper() or '(NSFL)' in title.upper()
     post = Post(user_id=user.id, community_id=community.id,
-                title=html.unescape(name),
+                title=html.unescape(title),
                 comments_enabled=request_json['object']['commentsEnabled'] if 'commentsEnabled' in request_json['object'] else True,
                 sticky=request_json['object']['stickied'] if 'stickied' in request_json['object'] else False,
                 nsfw=request_json['object']['sensitive'] if 'sensitive' in request_json['object'] else False,
@@ -1677,7 +1679,8 @@ def create_post(activity_log: ActivityPubLog, community: Community, request_json
                 from_bot=user.bot,
                 score=instance_weight(user.ap_domain),
                 instance_id=user.instance_id,
-                indexable=user.indexable
+                indexable=user.indexable,
+                microblog=microblog
                 )
     # Get post content. Lemmy and Kbin put this in different places.
     if 'source' in request_json['object'] and isinstance(request_json['object']['source'], dict) and request_json['object']['source']['mediaType'] == 'text/markdown': # Lemmy
@@ -1693,11 +1696,17 @@ def create_post(activity_log: ActivityPubLog, community: Community, request_json
         else:
             post.body_html = allowlist_html(request_json['object']['content'])
             post.body = html_to_text(post.body_html)
-        if name == "[Microblog]":
-            name += ' ' + microblog_content_to_title(post.body_html)
-            if '[NSFL]' in name.upper() or '(NSFL)' in name.upper():
+        if microblog:
+            autogenerated_title = microblog_content_to_title(post.body_html)
+            if len(autogenerated_title) < 20:
+                title = '[Microblog] ' + autogenerated_title
+            else:
+                title = autogenerated_title
+            if '[NSFL]' in title.upper() or '(NSFL)' in title.upper():
                 post.nsfl = True
-            post.title = name
+            if '[NSFW]' in title.upper() or '(NSFW)' in title.upper():
+                post.nsfw = True
+            post.title = title
     # Discard post if it contains certain phrases. Good for stopping spam floods.
     blocked_phrases_list = blocked_phrases()
     for blocked_phrase in blocked_phrases_list:
@@ -1934,7 +1943,11 @@ def update_post_from_activity(post: Post, request_json: dict):
             post.body_html = allowlist_html(request_json['object']['content'])
             post.body = html_to_text(post.body_html)
         if name == "[Microblog]":
-            name += ' ' + microblog_content_to_title(post.body_html)
+            autogenerated_title = microblog_content_to_title(post.body_html)
+            if len(autogenerated_title) < 20:
+                name += ' ' + autogenerated_title
+            else:
+                name = autogenerated_title
             nsfl_in_title = '[NSFL]' in name.upper() or '(NSFL)' in name.upper()
             post.title = name
     # Language
diff --git a/app/models.py b/app/models.py
index ac0ef598..89adca95 100644
--- a/app/models.py
+++ b/app/models.py
@@ -980,6 +980,7 @@ class Post(db.Model):
     body = db.Column(db.Text)
     body_html = db.Column(db.Text)
     type = db.Column(db.Integer)
+    microblog = db.Column(db.Boolean, default=False)
     comments_enabled = db.Column(db.Boolean, default=True)
     deleted = db.Column(db.Boolean, default=False, index=True)
     mea_culpa = db.Column(db.Boolean, default=False)
diff --git a/app/utils.py b/app/utils.py
index 073c75e8..6fa1b058 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -342,7 +342,7 @@ def microblog_content_to_title(html: str) -> str:
             title = shorten_string(title, 197)
         else:
             title = '(content in post body)'
-        return title
+        return title.strip()
 
     if end_index != -1:
         if question_index != -1 and question_index == end_index:
@@ -357,7 +357,7 @@ def microblog_content_to_title(html: str) -> str:
                 break
         title = title[:i] + ' ...' if i > 0 else ''
 
-    return title
+    return title.strip()
 
 
 def community_link_to_href(link: str) -> str:
diff --git a/migrations/versions/f6d6bd92cf88_post_microblog_flag.py b/migrations/versions/f6d6bd92cf88_post_microblog_flag.py
new file mode 100644
index 00000000..5daa17df
--- /dev/null
+++ b/migrations/versions/f6d6bd92cf88_post_microblog_flag.py
@@ -0,0 +1,34 @@
+"""post microblog flag
+
+Revision ID: f6d6bd92cf88
+Revises: 5bf49b8b7b79
+Create Date: 2024-08-08 18:41:20.321882
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'f6d6bd92cf88'
+down_revision = '5bf49b8b7b79'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('post', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('microblog', sa.Boolean(), nullable=True))
+
+    # ### end Alembic commands ###
+
+    op.execute(sa.DDL("UPDATE \"post\" SET microblog = true WHERE starts_with(title, '[Microblog]')"))
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('post', schema=None) as batch_op:
+        batch_op.drop_column('microblog')
+
+    # ### end Alembic commands ###