diff --git a/plugins/metadata/config.yml.dist b/plugins/metadata/config.yml.dist
index 7d0b1e1..602edd9 100644
--- a/plugins/metadata/config.yml.dist
+++ b/plugins/metadata/config.yml.dist
@@ -1,6 +1,7 @@
 open_graph:
   domain: domainregisteredonfacebook.com
   environment_logo: 'http://example.com/designs/themes/environmenttheme/images/logo.png'
+  namespace: app_scope
   types:
     article: article
     product: facebook_app:sse_product
diff --git a/plugins/metadata/lib/ext/article.rb b/plugins/metadata/lib/ext/article.rb
index 435d6b9..419c069 100644
--- a/plugins/metadata/lib/ext/article.rb
+++ b/plugins/metadata/lib/ext/article.rb
@@ -3,8 +3,13 @@ require_dependency 'article'
 class Article
 
   metadata_spec namespace: :og, key_attr: :property, tags: {
-    type: MetadataPlugin.og_types[:article] || :article,
-    url: proc{ |a, plugin| plugin.og_url_for a.url },
+    type: proc do |a, plugin|
+      plugin.context.params[:og_type] || MetadataPlugin.og_types[:article] || :article
+    end,
+    url: proc do |a, plugin|
+      url = a.url.merge! profile: a.profile.identifier, og_type: plugin.context.params[:og_type]
+      plugin.og_url_for url
+    end,
     title: proc{ |a, plugin| "#{a.title} - #{a.profile.name}" },
     image: proc do |a, plugin|
       result = a.body_images_paths
diff --git a/plugins/metadata/lib/ext/community.rb b/plugins/metadata/lib/ext/community.rb
index e5dbb0d..a015735 100644
--- a/plugins/metadata/lib/ext/community.rb
+++ b/plugins/metadata/lib/ext/community.rb
@@ -4,7 +4,7 @@ require_dependency "#{File.dirname __FILE__}/profile"
 class Community
 
   metadata_spec namespace: :og, tags: {
-    type: MetadataPlugin.og_types[:community] || :community,
+    type: proc{ |c, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:community] || :community },
   }
 
 end
diff --git a/plugins/metadata/lib/ext/enterprise.rb b/plugins/metadata/lib/ext/enterprise.rb
index ae43783..eaa48a7 100644
--- a/plugins/metadata/lib/ext/enterprise.rb
+++ b/plugins/metadata/lib/ext/enterprise.rb
@@ -4,7 +4,7 @@ require_dependency "#{File.dirname __FILE__}/profile"
 class Enterprise
 
   metadata_spec namespace: :og, tags: {
-    type: MetadataPlugin.og_types[:enterprise] || :enterprise,
+    type: proc{ |e, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:enterprise] || :enterprise },
   }
 
   metadata_spec namespace: 'business:contact_data', tags: {
diff --git a/plugins/metadata/lib/ext/environment.rb b/plugins/metadata/lib/ext/environment.rb
index fda9177..e002c43 100644
--- a/plugins/metadata/lib/ext/environment.rb
+++ b/plugins/metadata/lib/ext/environment.rb
@@ -7,7 +7,7 @@ class Environment
   }
 
   metadata_spec namespace: :og, tags: {
-    type: 'website',
+    type: proc{ |e, plugin| plugin.context.params[:og_type] || 'website' },
     title: proc{ |e, plugin| e.name },
     site_name: proc{ |e, plugin| e.name },
     description: proc{ |e, plugin| e.name },
diff --git a/plugins/metadata/lib/ext/person.rb b/plugins/metadata/lib/ext/person.rb
index f3f8600..060e6b5 100644
--- a/plugins/metadata/lib/ext/person.rb
+++ b/plugins/metadata/lib/ext/person.rb
@@ -4,7 +4,7 @@ require_dependency "#{File.dirname __FILE__}/profile"
 class Person
 
   metadata_spec namespace: :og, tags: {
-    type: MetadataPlugin.og_types[:person] || :person,
+    type: proc{ |p, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:person] || :person },
   }
 
 end
diff --git a/plugins/metadata/lib/ext/product.rb b/plugins/metadata/lib/ext/product.rb
index 11a7e69..b2de60c 100644
--- a/plugins/metadata/lib/ext/product.rb
+++ b/plugins/metadata/lib/ext/product.rb
@@ -3,8 +3,12 @@ require_dependency 'product'
 class Product
 
   metadata_spec namespace: :og, tags: {
-    type: MetadataPlugin.og_types[:product] || :product,
+    type: proc{ |p, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:product] || :product },
     url: proc{ |p, plugin| plugin.og_url_for p.url },
+    url: proc do |p, plugin|
+      url = p.url.merge! profile: p.profile.identifier, og_type: plugin.context.params[:og_type]
+      plugin.og_url_for url
+    end,
     gr_hascurrencyvalue: proc{ |p, plugin| p.price.to_f },
     gr_hascurrency: proc{ |p, plugin| p.environment.currency_unit },
     title: proc{ |p, plugin| "#{p.name} - #{p.profile.name}" if p },
diff --git a/plugins/metadata/lib/ext/profile.rb b/plugins/metadata/lib/ext/profile.rb
index 630905e..ce8c3f8 100644
--- a/plugins/metadata/lib/ext/profile.rb
+++ b/plugins/metadata/lib/ext/profile.rb
@@ -3,7 +3,7 @@ require_dependency 'profile'
 class Profile
 
   metadata_spec namespace: :og, tags: {
-    type: MetadataPlugin.og_types[:profile] || :profile,
+    type: proc{ |p, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:profile] || :profile },
     image: proc{ |p, plugin| "#{p.environment.top_url}#{p.image.public_filename}" if p.image },
     title: proc{ |p, plugin| if p.nickname.present? then p.nickname else p.name end },
     url: proc do |p, plugin|
diff --git a/plugins/metadata/lib/ext/uploaded_file.rb b/plugins/metadata/lib/ext/uploaded_file.rb
index 399eec2..cb42251 100644
--- a/plugins/metadata/lib/ext/uploaded_file.rb
+++ b/plugins/metadata/lib/ext/uploaded_file.rb
@@ -6,9 +6,12 @@ class UploadedFile
   metadata_spec namespace: :og, tags: {
     type: proc do |u, plugin|
       type = if u.image? then :image else :uploaded_file end
-      MetadataPlugin.og_types[type] || type
+      plugin.context.params[:og_type] || MetadataPlugin.og_types[type] || type
+    end,
+    url: proc do |u, plugin|
+      url = u.url.merge! profile: u.profile.identifier, view: true, og_type: plugin.context.params[:og_type]
+      plugin.og_url_for url
     end,
-    url: proc{ |u, plugin| plugin.og_url_for u.url.merge(view: true) },
     title: proc{ |u, plugin| u.title },
     image: proc{ |u, plugin| "#{u.environment.top_url}#{u.public_filename}" if u.image? },
     description: proc{ |u, plugin| u.abstract || u.title },
diff --git a/plugins/metadata/lib/metadata_plugin.rb b/plugins/metadata/lib/metadata_plugin.rb
index 5a9e64b..49285e7 100644
--- a/plugins/metadata/lib/metadata_plugin.rb
+++ b/plugins/metadata/lib/metadata_plugin.rb
@@ -1,5 +1,7 @@
 
-class MetadataPlugin < Noosfero::Plugin
+module MetadataPlugin
+
+  extend Noosfero::Plugin::ParentMethods
 
   def self.plugin_name
     _('Export metadata')
@@ -13,89 +15,14 @@ class MetadataPlugin < Noosfero::Plugin
     @config ||= HashWithIndifferentAccess.new(YAML.load File.read("#{File.dirname __FILE__}/../config.yml")) rescue {}
   end
 
-  def self.og_types
-    @og_types ||= self.config[:open_graph][:types] rescue {}
-  end
-
-  CONTROLLERS = {
-    manage_products: {
-      variable: :@product,
-    },
-    content_viewer: {
-      variable: proc do
-        if profile and @page and profile.home_page_id == @page.id
-          @profile
-        elsif @page.respond_to? :encapsulated_file
-          @page.encapsulated_file
-        else
-          @page
-        end
-      end,
-    },
-    profile: {
-      variable: :@profile,
-    },
-    # fallback
-    environment: {
-      variable: :@environment,
-    },
-  }
-
-  def head_ending
-    plugin = self
-    lambda do
-      options = MetadataPlugin::CONTROLLERS[controller.controller_path.to_sym]
-      options ||= MetadataPlugin::CONTROLLERS[:profile] if controller.is_a? ProfileController
-      options ||= MetadataPlugin::CONTROLLERS[:environment]
-      return unless options
-
-      return unless object = case variable = options[:variable]
-        when Proc then instance_exec(&variable)
-        else instance_variable_get variable
-        end
-      return if object.respond_to? :public? and not object.public?
-      return unless specs = (object.class.metadata_specs rescue nil)
-
-      r = []
-      specs.each do |namespace, spec|
-        namespace = "#{namespace}:" if namespace.present?
-        key_attr = spec[:key_attr] || :property
-        value_attr = spec[:value_attr] || :content
-        tags = spec[:tags]
-
-        tags.each do |key, values|
-          key = "#{namespace}#{key}"
-          values = values.call(object, plugin) if values.is_a? Proc
-          next if values.blank?
-
-          Array(values).each do |value|
-            value = value.call(object, plugin) if value.is_a? Proc
-            next if value.blank?
-            r << tag(:meta, key_attr => key, value_attr => value)
-          end
-        end
-      end
-      r.join
-    end
-  end
-
-  # context HELPERS
-  def og_url_for options
-    options.delete :port
-    options[:host] = self.class.config[:open_graph][:domain] rescue context.send(:environment).default_hostname
-    Noosfero::Application.routes.url_helpers.url_for options
+  def self.og_config
+    @og_config ||= self.config[:open_graph] rescue {}
   end
-
-  def helpers
-    self.context.class.helpers
+  def self.og_types
+    @og_types ||= self.og_config[:types] rescue {}
   end
 
-  protected
-
-end
+  mattr_accessor :controllers
+  self.controllers = MetadataPlugin::Controllers.new
 
-ActiveSupport.run_load_hooks :metadata_plugin, MetadataPlugin
-ActiveSupport.on_load :active_record do
-  ActiveRecord::Base.extend MetadataPlugin::Specs::ClassMethods
 end
-
diff --git a/plugins/metadata/lib/metadata_plugin/base.rb b/plugins/metadata/lib/metadata_plugin/base.rb
new file mode 100644
index 0000000..a54fee4
--- /dev/null
+++ b/plugins/metadata/lib/metadata_plugin/base.rb
@@ -0,0 +1,80 @@
+
+class MetadataPlugin::Base < Noosfero::Plugin
+
+  def self.plugin_name
+    _('Export metadata')
+  end
+
+  def self.plugin_description
+    _('Export metadata for models on meta tags')
+  end
+
+  def self.config
+    @config ||= HashWithIndifferentAccess.new(YAML.load File.read("#{File.dirname __FILE__}/../config.yml")) rescue {}
+  end
+
+  def self.og_types
+    @og_types ||= self.config[:open_graph][:types] rescue {}
+  end
+
+  class_attribute :controllers
+  self.controllers = MetadataPlugin::Controllers.new
+
+  def head_ending
+    plugin = self
+    lambda do
+      variable = plugin.class.controllers.send controller.controller_path rescue nil
+      variable ||= plugin.class.controllers.send :profile if controller.is_a? ProfileController
+      variable ||= plugin.class.controllers.send :home
+      return unless variable
+
+      return unless object = case variable
+        when Proc then instance_exec(&variable)
+        else instance_variable_get variable
+        end
+      return if object.respond_to? :public? and not object.public?
+      return unless specs = (object.class.metadata_specs rescue nil)
+
+      r = []
+      specs.each do |namespace, spec|
+        namespace = "#{namespace}:" if namespace.present?
+        key_attr = spec[:key_attr] || :property
+        value_attr = spec[:value_attr] || :content
+        tags = spec[:tags]
+
+        tags.each do |key, values|
+          key = "#{namespace}#{key}"
+          values = values.call(object, plugin) if values.is_a? Proc rescue nil
+          next if values.blank?
+
+          Array(values).each do |value|
+            value = value.call(object, plugin) if value.is_a? Proc rescue nil
+            next if value.blank?
+            r << tag(:meta, key_attr => key, value_attr => CGI.escape_html(value.to_s))
+          end
+        end
+      end
+      r.join
+    end
+  end
+
+  # context HELPERS
+  def og_url_for options
+    options.delete :port
+    options[:host] = self.class.config[:open_graph][:domain] rescue context.send(:environment).default_hostname
+    Noosfero::Application.routes.url_helpers.url_for options
+  end
+
+  def helpers
+    self.context.class.helpers
+  end
+
+  protected
+
+end
+
+ActiveSupport.run_load_hooks :metadata_plugin, MetadataPlugin
+ActiveSupport.on_load :active_record do
+  ActiveRecord::Base.extend MetadataPlugin::Specs::ClassMethods
+end
+
diff --git a/plugins/metadata/lib/metadata_plugin/controllers.rb b/plugins/metadata/lib/metadata_plugin/controllers.rb
new file mode 100644
index 0000000..63db241
--- /dev/null
+++ b/plugins/metadata/lib/metadata_plugin/controllers.rb
@@ -0,0 +1,27 @@
+class MetadataPlugin::Controllers
+
+  def manage_products
+    :@product
+  end
+
+  def content_viewer
+    lambda do
+      if profile and @page and profile.home_page_id == @page.id
+        @profile
+      elsif @page.respond_to? :encapsulated_file
+        @page.encapsulated_file
+      else
+        @page
+      end
+    end
+  end
+
+  def profile
+    :@profile
+  end
+
+  def home
+    :@environment
+  end
+
+end
--
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