show story hider count on story detail page

app/models/story.rb

@@ -225,6 +225,11 @@ class Story < ActiveRecord::Base
       "hotness = '#{self.calculated_hotness}' WHERE id = #{self.id.to_i}")
   end
 
+  def hider_count
+    @hider_count ||= Vote.where(:story_id => self.id, :comment_id => nil,
+      :vote => 0).count
+  end
+
   def is_editable_by_user?(user)
     if user && user.is_moderator?
       return true

app/views/stories/_listdetail.html.erb

@@ -71,6 +71,9 @@ class="story <%= story.vote == 1 ? "upvoted" : "" %> <%= story.vote == -1 ?
             | <%= link_to "hide", story_hide_url(story.short_id),
               :class => "hider" %>
           <% end %>
+          <% if defined?(single_story) && single_story && story.hider_count > 0 %>
+            (hidden by <%= pluralize(story.hider_count, "user") %>)
+          <% end %>
         <% end %>
         <% if !story.is_gone? && (@user || story.comments_count > 0) %>
           <span class="comments_label">