diff --git a/app/controllers/pool_versions_controller.rb b/app/controllers/pool_versions_controller.rb
index 5ab18aa7a..ca5d44dd4 100644
--- a/app/controllers/pool_versions_controller.rb
+++ b/app/controllers/pool_versions_controller.rb
@@ -15,6 +15,16 @@ class PoolVersionsController < ApplicationController
     end
   end
 
+  def diff
+    @pool_version = PoolArchive.find(params[:id])
+
+    if params[:other_id]
+      @other_version = PoolArchive.find(params[:other_id])
+    else
+      @other_version = @pool_version.previous
+    end
+  end
+
 private
 
   def check_availabililty
diff --git a/app/helpers/pool_versions_helper.rb b/app/helpers/pool_versions_helper.rb
index 8c25df57d..05898ca02 100644
--- a/app/helpers/pool_versions_helper.rb
+++ b/app/helpers/pool_versions_helper.rb
@@ -1,22 +1,19 @@
 module PoolVersionsHelper
-  def pool_version_diff(pool_version)
+  def pool_version_diff(pool_version, previous = nil, options = {})
     html = ""
 
-    html << pool_version.added_post_ids.map do |post_id|
+    diff = pool_version.build_diff(previous)
+
+    html << diff[:added_post_ids].map do |post_id|
       '<ins><a href="/posts/' + post_id.to_s + '">' + post_id.to_s + '</a></ins>'
     end.join(" ")
 
     html << " "
 
-    html << pool_version.removed_post_ids.map do |post_id|
+    html << diff[:removed_post_ids].map do |post_id|
       '<del><a href="/posts/' + post_id.to_s + '">' + post_id.to_s + '</a></del>'
     end.join(" ")
 
-    if pool_version.description_changed?
-      html << '<ins>desc:' + h(pool_version.description) + '</ins> '
-      html << '<del>desc:' + h(pool_version.previous.description) + '</del> '
-    end
-
     return html.html_safe
   end
 end
diff --git a/app/logical/user_promotion.rb b/app/logical/user_promotion.rb
index bc3283256..69e2a8edb 100644
--- a/app/logical/user_promotion.rb
+++ b/app/logical/user_promotion.rb
@@ -31,11 +31,11 @@ private
   
   def create_mod_actions
     if old_can_approve_posts != user.can_approve_posts?
-      ModAction.log("#{promoter.name} changed approval privileges for #{user.name} from #{old_can_approve_posts} to [b]#{user.can_approve_posts?}[/b]")
+      ModAction.log("\"#{promoter.name}\":/users/#{promoter.id} changed approval privileges for \"#{user.name}\":/users/#{user.id} from #{old_can_approve_posts} to [b]#{user.can_approve_posts?}[/b]")
     end
 
     if old_can_upload_free != user.can_upload_free?
-      ModAction.log("#{promoter.name} changed unlimited upload privileges for #{user.name} from #{old_can_upload_free} to [b]#{user.can_upload_free?}[/b]")
+      ModAction.log("\"#{promoter.name}\":/users/#{promoter.id} changed unlimited upload privileges for \"#{user.name}\":/users/#{user.id} from #{old_can_upload_free} to [b]#{user.can_upload_free?}[/b]")
     end
   end
   
diff --git a/app/models/pool_archive.rb b/app/models/pool_archive.rb
index ff38de4f9..e050e097d 100644
--- a/app/models/pool_archive.rb
+++ b/app/models/pool_archive.rb
@@ -62,6 +62,24 @@ class PoolArchive < ActiveRecord::Base
     sqs_service.send_message(msg)
   end
 
+  def build_diff(other = nil)
+    diff = {}
+    prev = previous
+
+    if prev.nil?
+      diff[:added_post_ids] = added_post_ids
+      diff[:removed_post_ids] = removed_post_ids
+      diff[:added_desc] = description
+    else
+      diff[:added_post_ids] = post_ids - prev.post_ids
+      diff[:removed_post_ids] = prev.post_ids - post_ids
+      diff[:added_desc] = description
+      diff[:removed_desc] = prev.description
+    end
+
+    diff
+  end
+
   def previous
     PoolArchive.where("pool_id = ? and version < ?", pool_id, version).order("version desc").first
   end
diff --git a/app/views/pool_versions/diff.html.erb b/app/views/pool_versions/diff.html.erb
new file mode 100644
index 000000000..c0ab1e2ee
--- /dev/null
+++ b/app/views/pool_versions/diff.html.erb
@@ -0,0 +1,19 @@
+<div id="c-pools">
+  <div id="a-diff">
+    <h1>Pool Version Comparison: <%= @pool_version.name %></h1>
+
+    <ul>
+      <li><strong>Posts</strong>: <%= pool_version_diff(@pool_version, @other_version) %></li>
+      <% if @other_version %>
+        <li><strong>Old Desc</strong>: <%= @other_version.description %></li>
+      <% end %>
+      <li><strong>New Desc</strong>: <%= @pool_version.description %></li>
+    </ul>
+  </div>
+</div>
+
+<%= render "pools/secondary_links" %>
+
+<% content_for(:page_title) do %>
+  Pool Version Comparison - <%= @pool_version.name %> - <%= Danbooru.config.app_name %>
+<% end %>
diff --git a/app/views/pool_versions/index.html.erb b/app/views/pool_versions/index.html.erb
index f7c0ecc37..ddca76a92 100644
--- a/app/views/pool_versions/index.html.erb
+++ b/app/views/pool_versions/index.html.erb
@@ -8,6 +8,7 @@
           <th>Pool</th>
           <th>Post Count</th>
           <th>Changes</th>
+          <th>Desc Chg</th>
           <th>Updater</th>
           <% if CurrentUser.is_moderator? %>
             <th>IP Address</th>
@@ -24,6 +25,7 @@
             <td><%= link_to pool_version.pretty_name, pool_path(pool_version.pool_id), :class => "pool-category-#{pool_version.pool.category}" %></td>
             <td><%= link_to pool_version.post_ids.size, pool_versions_path(:search => {:pool_id => pool_version.pool_id}) %></td>
             <td><%= pool_version_diff(pool_version) %></td>
+            <td><%= link_to_if pool_version.description_changed, pool_version.description_changed, diff_pool_version_path(pool_version.id) %></td>
             <td><%= link_to_user pool_version.updater %></td>
             <% if CurrentUser.is_moderator? %>
               <td>
diff --git a/config/routes.rb b/config/routes.rb
index 387f0b572..cae450c4a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -187,7 +187,11 @@ Rails.application.routes.draw do
       get :all_select
     end
   end
-  resources :pool_versions, :only => [:index]
+  resources :pool_versions, :only => [:index] do
+    member do
+      get :diff
+    end
+  end
   resources :posts do
     resources :events, :only => [:index], :controller => "post_events"
     resource :artist_commentary, :only => [:index, :show] do