diff --git a/boards/management/__init__.py b/boards/management/__init__.py
new file mode 100644
--- /dev/null
+++ b/boards/management/__init__.py
@@ -0,0 +1,1 @@
+__author__ = 'vurdalak'
diff --git a/boards/management/commands/__init__.py b/boards/management/commands/__init__.py
new file mode 100644
--- /dev/null
+++ b/boards/management/commands/__init__.py
@@ -0,0 +1,1 @@
+__author__ = 'vurdalak'
diff --git a/boards/management/commands/cleanusers.py b/boards/management/commands/cleanusers.py
new file mode 100644
--- /dev/null
+++ b/boards/management/commands/cleanusers.py
@@ -0,0 +1,29 @@
+from datetime import datetime, timedelta
+from django.core.management import BaseCommand
+from django.db import transaction
+from django.db.models import Count
+from boards.models import User, Post
+
+__author__ = 'neko259'
+
+OLD_USER_AGE_DAYS = 90
+
+
+class Command(BaseCommand):
+    help = 'Removes empty users (that don\'t have posts or tags'
+
+    @transaction.atomic
+    def handle(self, *args, **options):
+        old_registration_date = datetime.now().date() - timedelta(
+            OLD_USER_AGE_DAYS)
+
+        old_users = User.objects.annotate(tags_count=Count('fav_tags')).filter(
+            tags_count=0).filter(registration_time__lt=old_registration_date)
+        deleted_users = 0
+        for user in old_users:
+            if not Post.objects.filter(user=user).exists():
+                self.stdout.write('Deleting user %s' % user.user_id)
+                user.delete()
+                deleted_users += 1
+
+        self.stdout.write('Deleted %d users' % deleted_users)
\ No newline at end of file
diff --git a/boards/tests.py b/boards/tests.py
--- a/boards/tests.py
+++ b/boards/tests.py
@@ -161,8 +161,7 @@ class PagesTest(TestCase):
 
         response_not_existing = client.get(THREAD_PAGE + str(
             existing_post_id + 1) + '/')
-        self.assertEqual(PAGE_404,
-                         response_not_existing.templates[0].name,
+        self.assertEqual(PAGE_404, response_not_existing.templates[0].name,
                          u'Not existing thread is opened')
 
         response_existing = client.get(TAG_PAGE + tag_name + '/')
@@ -177,7 +176,7 @@ class PagesTest(TestCase):
 
         reply_id = Post.objects.create_post('', TEST_TEXT,
                                             thread=Post.objects.all()[0]
-                                            .thread)
+                                            .get_thread())
         response_not_existing = client.get(THREAD_PAGE + str(
             reply_id) + '/')
         self.assertEqual(PAGE_404,
diff --git a/boards/views/api.py b/boards/views/api.py
--- a/boards/views/api.py
+++ b/boards/views/api.py
@@ -37,9 +37,6 @@ def api_get_threaddiff(request, thread_i
 
     thread = get_object_or_404(Post, id=thread_id).get_thread()
 
-    logger.info('Getting thread #%s diff since %s' % (thread_id,
-        last_update_time))
-
     filter_time = datetime.fromtimestamp(float(last_update_time) / 1000000,
                                          timezone.get_current_timezone())
 
diff --git a/boards/views/base.py b/boards/views/base.py
--- a/boards/views/base.py
+++ b/boards/views/base.py
@@ -13,8 +13,6 @@ import neboard
 
 BAN_REASON_SPAM = 'Autoban: spam bot'
 
-OLD_USER_AGE_DAYS = 90
-
 PARAMETER_FORM = 'form'
 
 
@@ -74,9 +72,6 @@ class BaseBoardView(View):
             user = User.objects.create(user_id=new_id, rank=RANK_USER,
                                        registration_time=time_now)
 
-            # TODO Move this to manage.py commands
-            #self._delete_old_users()
-
             session['user_id'] = user.id
         else:
             user = User.objects.select_related('fav_tags').get(
@@ -97,21 +92,6 @@ class BaseBoardView(View):
 
         return theme
 
-    def _delete_old_users(self):
-        """
-        Delete users with no favorite tags and posted messages. These can be spam
-        bots or just old user accounts
-        """
-
-        old_registration_date = datetime.now().date() - timedelta(
-            OLD_USER_AGE_DAYS)
-
-        for user in User.objects.annotate(tags_count=Count('fav_tags')).filter(
-                tags_count=0).filter(
-                registration_time__lt=old_registration_date):
-            if not Post.objects.filter(user=user).exists():
-                user.delete()
-
     @transaction.atomic
     def _ban_current_user(self, request):
         """
diff --git a/boards/views/thread.py b/boards/views/thread.py
--- a/boards/views/thread.py
+++ b/boards/views/thread.py
@@ -23,7 +23,10 @@ PARAMETER_BUMPABLE = 'bumpable'
 class ThreadView(BaseBoardView, PostMixin, FormMixin):
 
     def get(self, request, post_id, mode=MODE_NORMAL, form=None):
-        opening_post = Post.objects.filter(id=post_id).only('thread_new')[0]
+        try:
+            opening_post = Post.objects.filter(id=post_id).only('thread_new')[0]
+        except IndexError:
+            raise Http404
 
         # If this is not OP, don't show it as it is
         if not opening_post or not opening_post.is_opening():