Index: twitter_post/twitter_post.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/twitter/twitter_post/twitter_post.module,v
retrieving revision 1.1.2.1
diff -u -p -r1.1.2.1 twitter_post.module
--- twitter_post/twitter_post.module	25 Jan 2010 05:09:05 -0000	1.1.2.1
+++ twitter_post/twitter_post.module	1 Jun 2010 21:10:10 -0000
@@ -146,3 +146,21 @@ function twitter_post_form($account = NU
     return $form;
   }
 }
+
+/**
+ * Implements hook_content_extra_fields
+ */
+function twitter_post_content_extra_fields($type_name) {
+  $type = node_get_types('type', $type_name);
+  $twitter_types = variable_get('twitter_post_types', array());
+  $extra = array();
+
+  if (!empty($twitter_types[$type_name])) {
+    $extra['twitter'] = array(
+      'label' => 'Twitter',
+      'description' => t('Twitter module form.'),
+      'weight' => 0
+    );
+  }
+  return $extra;
+}