diff --git a/app/assets/javascripts/blacklists.js b/app/assets/javascripts/blacklists.js
index 64f88e25b..cafe44671 100644
--- a/app/assets/javascripts/blacklists.js
+++ b/app/assets/javascripts/blacklists.js
@@ -4,7 +4,7 @@
   Danbooru.Blacklist.blacklists = [];
   
   Danbooru.Blacklist.parse_entries = function() {
-    var entries = (Danbooru.meta("blacklisted-tags") || "").replace(/(rating:[qes])\w+/, "$1").split(/,/);
+    var entries = ($.parseJSON(Danbooru.meta("blacklisted-tags") || "[]")).replace(/(rating:[qes])\w+/, "$1").split(/,/);
     $.each(entries, function(i, tags) {
       var blacklist = {
         "tags": tags, 
diff --git a/app/models/post.rb b/app/models/post.rb
index 652aa22fe..3f7c6f955 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -595,6 +595,11 @@ class Post < ActiveRecord::Base
     
     def fast_count(tags = "")
       tags = tags.to_s.strip
+      
+      if tags.blank?
+        return Danbooru.config.blank_tag_search_fast_count || 1_000_000
+      end
+      
       count = get_count_from_cache(tags)
       if count.nil?
         if tags.blank? && Danbooru.config.blank_tag_search_fast_count
diff --git a/app/models/user.rb b/app/models/user.rb
index 04096e65a..c33f8009c 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -219,7 +219,7 @@ class User < ActiveRecord::Base
         return {
           "Member" => Levels::MEMBER,
           "Privileged" => Levels::PRIVILEGED,
-          "Builder" => Levels::BUIDLER,
+          "Builder" => Levels::BUILDER,
           "Contributor" => Levels::CONTRIBUTOR,
           "Janitor" => Levels::JANITOR,
           "Moderator" => Levels::MODERATOR,
diff --git a/app/views/layouts/default.html.erb b/app/views/layouts/default.html.erb
index e3826e2e4..88c6cde45 100644
--- a/app/views/layouts/default.html.erb
+++ b/app/views/layouts/default.html.erb
@@ -9,7 +9,7 @@
   <meta name="current-user-id" content="<%= CurrentUser.id %>">
   <meta name="user-comment-threshold" content="<%= CurrentUser.comment_threshold %>">
   <% unless CurrentUser.user.blacklisted_tags.blank? %>
-    <meta name="blacklisted-tags" content="<%= CurrentUser.user.blacklisted_tags %>">
+    <meta name="blacklisted-tags" content="<%= CurrentUser.user.blacklisted_tag_array.to_json %>">
   <% end %>
   <% if flash[:notice] =~ /error/ %>
     <meta name="errors" content="true">
diff --git a/app/views/legacy/tags.xml.erb b/app/views/legacy/tags.xml.erb
index 071f28936..68a0c5354 100644
--- a/app/views/legacy/tags.xml.erb
+++ b/app/views/legacy/tags.xml.erb
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <tags type="array">
   <% @tags.each do |tag| %>
-    <tag name="<%= tag.name %>" id="<%= tag.id %>" ambiguous="false" created_at="<%= tag.created_at.strftime('%Y-%m-%d %H:%M') %>" count="<%= tag.post_count %>" type="<%= tag.category %>"></user>
+    <tag name="<%= tag.name %>" id="<%= tag.id %>" ambiguous="false" created_at="<%= tag.created_at.try(:strftime, '%Y-%m-%d %H:%M') %>" count="<%= tag.post_count %>" type="<%= tag.category %>"></user>
   <% end %>
 </tags>
diff --git a/app/views/tags/search.html.erb b/app/views/tags/search.html.erb
index 2ed583ab2..c53be075b 100644
--- a/app/views/tags/search.html.erb
+++ b/app/views/tags/search.html.erb
@@ -5,7 +5,7 @@
       
       <div class="input">
         <label for="search_category">Category</label>
-        <%= select "search", "category", Tag.canonical_tag_category_mapping.to_a %>
+        <%= select "search", "category", Danbooru.config.canonical_tag_category_mapping.to_a %>
       </div>
       
       <div class="input">
diff --git a/config/routes.rb b/config/routes.rb
index 2f9c4bd33..fa0a63be3 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -224,12 +224,13 @@ Danbooru::Application.routes.draw do
   match "/post/index.xml", :controller => "legacy", :action => "posts", :format => "xml"
   match "/post/index.json", :controller => "legacy", :action => "posts", :format => "json"
   match "/post/create.xml", :controller => "legacy", :action => "create_post"
-  match "/post/index" => redirect {|params, req| "/posts?tags=#{req.params[:tags].to_s.gsub(/ /, '%20')}&page=#{req.params[:page]}"}
-  match "/post" => redirect {|params, req| "/posts?tags=#{req.params[:tags].to_s.gsub(/ /, '%20')}&page=#{req.params[:page]}"}
+  match "/post/piclens", :controller => "legacy", :action => "unavailable"
+  match "/post/index" => redirect {|params, req| "/posts?tags=#{u(req.params[:tags])}&page=#{req.params[:page]}"}
+  match "/post" => redirect {|params, req| "/posts?tags=#{u(req.params[:tags])}&page=#{req.params[:page]}"}
   match "/post/upload" => redirect("/uploads/new")
   match "/post/moderate" => redirect("/moderator/post/queue")
-  match "/post/atom" => redirect {|params, req| "/posts.atom?tags=#{req.params[:tags].to_s.gsub(/ /, '%20')}"}
-  match "/post/atom.feed" => redirect {|params, req| "/posts.atom?tags=#{req.params[:tags].to_s.gsub(/ /, '%20')}"}
+  match "/post/atom" => redirect {|params, req| "/posts.atom?tags=#{u(req.params[:tags])}"}
+  match "/post/atom.feed" => redirect {|params, req| "/posts.atom?tags=#{u(req.params[:tags])}"}
   match "/post/popular_by_day" => redirect("/explore/posts/popular")
   match "/post/popular_by_week" => redirect("/explore/posts/popular")
   match "/post/popular_by_month" => redirect("/explore/posts/popular")
@@ -255,7 +256,7 @@ Danbooru::Application.routes.draw do
   
   match "/wiki" => redirect {|params, req| "/wiki_pages?page=#{req.params[:page]}"}
   match "/wiki/index" => redirect {|params, req| "/wiki_pages?page=#{req.params[:page]}"}
-  match "/wiki/show" => redirect {|params, req| "/wiki_pages?title=#{req.params[:title]}"}
+  match "/wiki/show" => redirect {|params, req| "/wiki_pages?title=#{u(req.params[:title])}"}
   match "/wiki/recent_changes" => redirect("/wiki_page_versions")
   match "/wiki/history/:title" => redirect("/wiki_page_versions?title=%{title}")