Index: nodewords_basic/includes/nodewords_basic.nodewords.tags.inc
===================================================================
--- nodewords_basic/includes/nodewords_basic.nodewords.tags.inc	(revision 5736)
+++ nodewords_basic/includes/nodewords_basic.nodewords.tags.inc	(working copy)
@@ -270,10 +270,13 @@
  * Check if the meta tag content is empty.
  */
 function nodewords_basic_robots_is_empty($content) {
-  $result = empty($content['index_follow']);
+  $result = empty($content['index_follow']) || $content['index_follow'] == 'index,follow';
 
   if (isset($content['value']) && is_array($content['value'])) {
     $value = array_filter($content['value']);
+    if (in_array('index', $value) && in_array('follow', $value) && count($value) == 2) {
+      $value = array();
+    }
 
     return ($result && empty($value));
   }
@@ -292,6 +295,9 @@
 
   if (!empty($value)) {
     $tags['robots'] = implode(',', $value);
+    if ($tags['robots'] == 'index,follow') {
+      unset($tags['robots']);
+    }
   }
 }