Index: /extensions/GuestBook/include/functions_comment.inc.php
===================================================================
--- /extensions/GuestBook/include/functions_comment.inc.php	(revision 15940)
+++ /extensions/GuestBook/include/functions_comment.inc.php	(revision 16000)
@@ -1,4 +1,8 @@
 <?php
 if (!defined('GUESTBOOK_PATH')) die('Hacking attempt!');
+
+include_once(PHPWG_ROOT_PATH.'include/functions_comment.inc.php');
+add_event_handler('user_comment_check_guestbook', 'user_comment_check',
+  EVENT_HANDLER_PRIORITY_NEUTRAL, 2);
 
 function insert_user_comment_guestbook( &$comm, $key, &$infos )
@@ -122,6 +126,8 @@
   }
   
-  include_once(PHPWG_ROOT_PATH.'include/functions_comment.inc.php');
-  $comment_action = user_comment_check($comment_action, $comm);
+  // perform more spam check
+  $comment_action = trigger_event('user_comment_check_guestbook',
+      $comment_action, $comm
+    );
 
   if ( $comment_action!='reject' )
Index: /extensions/GuestBook/template/guestbook.tpl
===================================================================
--- /extensions/GuestBook/template/guestbook.tpl	(revision 15948)
+++ /extensions/GuestBook/template/guestbook.tpl	(revision 16000)
@@ -67,5 +67,5 @@
   
   <p><label for="contentid">{'Comment'|@translate}* :</label></p>
-  <p><textarea name="content" id="contentid" rows="5" cols="60">{$comment_add.CONTENT}</textarea></p>
+  <p><textarea name="content" id="contentid" rows="10" cols="60">{$comment_add.CONTENT}</textarea></p>
   <p><input type="hidden" name="key" value="{$comment_add.KEY}">
     <input type="submit" value="{'Submit'|@translate}"> {'* : mandatory fields'|@translate}</p>