diff --git a/app/logical/post_query_builder.rb b/app/logical/post_query_builder.rb
index a3844fc5e..fc71e5a35 100644
--- a/app/logical/post_query_builder.rb
+++ b/app/logical/post_query_builder.rb
@@ -233,6 +233,13 @@ class PostQueryBuilder
       has_constraints!
     end
 
+    if q[:artcomm_ids]
+      q[:artcomm_ids].each do |artcomm_id|
+        relation = relation.where(:id => ArtistCommentaryVersion.where("updater_id = ?", artcomm_id).select("post_id").uniq)
+      end
+      has_constraints!
+    end
+
     if q[:post_id_negated]
       relation = relation.where("posts.id <> ?", q[:post_id_negated])
     end
diff --git a/app/models/tag.rb b/app/models/tag.rb
index 9b1117f16..a21b85c0c 100644
--- a/app/models/tag.rb
+++ b/app/models/tag.rb
@@ -1,5 +1,5 @@
 class Tag < ActiveRecord::Base
-  METATAGS = "-user|user|-approver|approver|commenter|comm|noter|-pool|pool|-fav|fav|ordfav|sub|md5|-rating|rating|-locked|locked|width|height|mpixels|score|favcount|filesize|source|-source|id|-id|date|age|order|-status|status|tagcount|gentags|arttags|chartags|copytags|parent|-parent|child|pixiv_id|pixiv"
+  METATAGS = "-user|user|-approver|approver|commenter|comm|noter|artcomm|-pool|pool|-fav|fav|ordfav|sub|md5|-rating|rating|-locked|locked|width|height|mpixels|score|favcount|filesize|source|-source|id|-id|date|age|order|-status|status|tagcount|gentags|arttags|chartags|copytags|parent|-parent|child|pixiv_id|pixiv"
   attr_accessible :category, :as => [:moderator, :janitor, :contributor, :gold, :member, :anonymous, :default, :builder, :admin]
   attr_accessible :is_locked, :as => [:moderator, :janitor, :admin]
   has_one :wiki_page, :foreign_key => "title", :primary_key => "name"
@@ -375,6 +375,11 @@ class Tag < ActiveRecord::Base
             user_id = User.name_to_id($2)
             q[:noter_ids] << user_id unless user_id.blank?
 
+          when "artcomm"
+            q[:artcomm_ids] ||= []
+            user_id = User.name_to_id($2)
+            q[:artcomm_ids] << user_id unless user_id.blank?
+
           when "-pool"
             q[:tags][:exclude] << "pool:#{Pool.name_to_id($2)}"