diff --git a/app/presenters/post_presenter.rb b/app/presenters/post_presenter.rb
index d15985e4d..1f5093d03 100644
--- a/app/presenters/post_presenter.rb
+++ b/app/presenters/post_presenter.rb
@@ -21,7 +21,7 @@ class PostPresenter < Presenter
 
     path = options[:path_prefix] || "/posts"
 
-    html =  %{<article id="post_#{post.id}" class="#{preview_class(post, options[:pool])}" #{data_attributes(post)}>}
+    html =  %{<article itemscope itemtype="http://schema.org/ImageObject" id="post_#{post.id}" class="#{preview_class(post, options[:pool])}" #{data_attributes(post)}>}
     if options[:tags].present?
       tag_param = "?tags=#{CGI::escape(options[:tags])}"
     elsif options[:pool_id] || options[:pool]
@@ -32,7 +32,7 @@ class PostPresenter < Presenter
       tag_param = nil
     end
     html << %{<a href="#{path}/#{post.id}#{tag_param}">}
-    html << %{<img src="#{post.preview_file_url}" alt="#{h(post.tag_string)}">}
+    html << %{<img itemprop="thumbnailUrl" src="#{post.preview_file_url}" alt="#{h(post.tag_string)}">}
     html << %{</a>}
 
     if options[:pool]
diff --git a/app/presenters/tag_set_presenter.rb b/app/presenters/tag_set_presenter.rb
index 6602e0617..2321bc03f 100644
--- a/app/presenters/tag_set_presenter.rb
+++ b/app/presenters/tag_set_presenter.rb
@@ -12,7 +12,7 @@ class TagSetPresenter < Presenter
   def tag_list_html(template, options = {})
     html = ""
     if @tags.present?
-      html << "<ul>"
+      html << '<ul itemscope itemtype="http://schema.org/ImageObject">'
       @tags.each do |tag|
         html << build_list_item(tag, template, options)
       end
@@ -112,7 +112,12 @@ private
 
     humanized_tag = tag.tr("_", " ")
     path = options[:path_prefix] || "/posts"
-    html << %{<a class="search-tag" href="#{path}?tags=#{u(tag)}">#{h(humanized_tag)}</a> }
+    if categories[tag] == Tag.categories.artist
+      itemprop = 'itemprop="author"'
+    else
+      itemprop = nil
+    end
+    html << %{<a class="search-tag" #{itemprop} href="#{path}?tags=#{u(tag)}">#{h(humanized_tag)}</a> }
 
     unless options[:name_only]
       if counts[tag].to_i >= 10_000
diff --git a/app/views/posts/partials/show/_image.html.erb b/app/views/posts/partials/show/_image.html.erb
index 5eb4bf630..023aacdde 100644
--- a/app/views/posts/partials/show/_image.html.erb
+++ b/app/views/posts/partials/show/_image.html.erb
@@ -1,3 +1,3 @@
 <% if post.visible? %>
-  <%= image_tag(post.file_url_for(CurrentUser.user), :width => post.image_width_for(CurrentUser.user), :height => post.image_height_for(CurrentUser.user), :id => "image", "data-original-width" => post.image_width, "data-original-height" => post.image_height, "data-large-width" => post.large_image_width, "data-large-height" => post.large_image_height, "data-tags" => post.tag_string, "data-uploader" => post.uploader_name, "data-rating" => post.rating, "data-flags" => post.status_flags, "data-parent-id" => post.parent_id, "data-has-children" => post.has_children?, "data-has-active-children" => post.has_active_children?, "data-score" => post.score, "data-fav-count" => post.fav_count) %>
+  <%= image_tag(post.file_url_for(CurrentUser.user), :width => post.image_width_for(CurrentUser.user), :height => post.image_height_for(CurrentUser.user), :id => "image", "data-original-width" => post.image_width, "data-original-height" => post.image_height, "data-large-width" => post.large_image_width, "data-large-height" => post.large_image_height, "data-tags" => post.tag_string, "data-uploader" => post.uploader_name, "data-rating" => post.rating, "data-flags" => post.status_flags, "data-parent-id" => post.parent_id, "data-has-children" => post.has_children?, "data-has-active-children" => post.has_active_children?, "data-score" => post.score, "data-fav-count" => post.fav_count, "itemprop" => "contentUrl") %>
 <% end %>
diff --git a/app/views/posts/partials/show/_information.html.erb b/app/views/posts/partials/show/_information.html.erb
index 3ab8e3ef3..26a280754 100644
--- a/app/views/posts/partials/show/_information.html.erb
+++ b/app/views/posts/partials/show/_information.html.erb
@@ -1,14 +1,17 @@
-<ul>
+<ul itemscope itemtype="http://schema.org">
   <li>ID: <%= post.id %></li>
   <li>Uploader: <%= link_to_user(post.uploader) + "&nbsp;".html_safe + link_to("&raquo;".html_safe, posts_path(:tags => "user:#{post.uploader.name}"), :rel => "nofollow") %></li>
-  <li>Date: <%= link_to time_ago_in_words_tagged(post.created_at), posts_path(:tags => "date:#{post.created_at.to_date}"), :rel => "nofollow" %></li>
+  <li>
+    Date: <%= link_to time_ago_in_words_tagged(post.created_at), posts_path(:tags => "date:#{post.created_at.to_date}"), :rel => "nofollow" %>
+    <meta itemprop="uploadDate" content="<%= post.created_at.iso8601 %>">
+  </li>
   <% if post.approver %>
     <li>Approver: <%= link_to_user(post.approver) %></li>
   <% end %>
   <li>
-    Size: <%= link_to_if post.visible?, number_to_human_size(post.file_size), post.file_url %>
+    Size: <%= link_to_if post.visible?, number_to_human_size(post.file_size), post.file_url, :itemprop => "contentSize" %>
     <% if post.has_dimensions? %>
-      (<%= post.image_width %>x<%= post.image_height %>)
+      (<span itemprop="width"><%= post.image_width %></span>x<span itemprop="height"><%= post.image_height %></span>)
     <% end %>
   </li>
   <li>Source: <%= post_source_tag(post) %></li>
diff --git a/app/views/posts/show.html.erb b/app/views/posts/show.html.erb
index 9d224943c..7a6f6ce19 100644
--- a/app/views/posts/show.html.erb
+++ b/app/views/posts/show.html.erb
@@ -40,7 +40,7 @@
 
       <%= render "posts/partials/show/notices", :post => @post %>
 
-      <section id="image-container" <%= PostPresenter.data_attributes(@post) %>>
+      <section itemscope itemtype="http://schema.org/ImageObject" id="image-container" <%= PostPresenter.data_attributes(@post) %>>
         <div id="note-container"></div>
         <div id="note-preview"></div>
         <%= @post.presenter.image_html(self) %>
diff --git a/public/robots.txt b/public/robots.txt
index b03cede03..15efe95a4 100644
--- a/public/robots.txt
+++ b/public/robots.txt
@@ -12,7 +12,6 @@ Disallow: /counts
 Disallow: /delayed_jobs
 Disallow: /dmails
 Disallow: /favorite
-Disallow: /favorites
 Disallow: /iqdb_queries
 Disallow: /ip_bans
 Disallow: /janitor_trials
@@ -33,7 +32,6 @@ Disallow: /post_sets
 Disallow: /post_versions
 Disallow: /post_votes
 Disallow: /posts.atom
-Disallow: /posts/show_seq
 Disallow: /posts/random
 Disallow: /posts/copy_notes
 Disallow: /posts/revert