Index: pcomment.inc.php
===================================================================
--- pcomment.inc.php	(.../plugin/pcomment.inc.php)	(revision 2)
+++ pcomment.inc.php	(.../pukiwiki/plugin/pcomment.inc.php)	(revision 31)
@@ -24,8 +24,8 @@
 
 define('PLUGIN_PCOMMENT_NUM_COMMENTS',     10); // Default 'latest N posts'
 define('PLUGIN_PCOMMENT_DIRECTION_DEFAULT', 1); // 1: above 0: below
-define('PLUGIN_PCOMMENT_SIZE_MSG',  70);
-define('PLUGIN_PCOMMENT_SIZE_NAME', 15);
+define('PLUGIN_PCOMMENT_SIZE_MSG',  44);
+define('PLUGIN_PCOMMENT_SIZE_NAME', 8);
 
 // Auto log rotation
 define('PLUGIN_PCOMMENT_AUTO_LOG', 0); // 0:off 1-N:number of comments per page
@@ -42,13 +42,20 @@
 define('PLUGIN_PCOMMENT_FORMAT_STRING',
 	"\x08" . 'MSG' . "\x08" . ' -- ' . "\x08" . 'NAME' . "\x08" . ' ' . "\x08" . 'DATE' . "\x08");
 
+define('PLUGIN_COMMENT_KEYWORD', '確認');
+define('PLUGIN_COMMENT_KEYWORD_IMG_ALT', '「かくにん」を漢字で入力して下さい。1文字目が「たしかめる」で2文字目が「みとめる」です。');
+define('PLUGIN_COMMENT_KEYWORD_IMG', IMAGE_DIR.'comment_keyword.png');
+
 function plugin_pcomment_action()
 {
 	global $vars;
 
 	if (PKWK_READONLY) die_message('PKWK_READONLY prohibits editing');
 
-	if (! isset($vars['msg']) || $vars['msg'] == '') return array();
+	if (! isset($vars['msg']) ) return array('msg'=>'', 'body'=>''); // Do nothing
+	$keyword_name = '_p_comment_keyword_'.$vars['comment_no'];
+	if(! isset($vars[$keyword_name]) || $vars[$keyword_name] != PLUGIN_COMMENT_KEYWORD) return array('msg'=>'', 'body'=>''); // Do nothing
+
 	$refer = isset($vars['refer']) ? $vars['refer'] : '';
 
 	$retval = plugin_pcomment_insert();
@@ -124,7 +131,11 @@
 		$s_nodate = htmlspecialchars($params['nodate']);
 		$s_count  = htmlspecialchars($count);
 
+		$comment_keyword = PLUGIN_COMMENT_KEYWORD_IMG;
+		$comment_keyword_img_alt = PLUGIN_COMMENT_KEYWORD_IMG_ALT;
+
 		$form_start = '<form action="' . get_script_uri() . '" method="post">' . "\n";
+		$tooltip = PLUGIN_COMMENT_KEYWORD_IMG_ALT;
 		$form = <<<EOD
   <div>
   <input type="hidden" name="digest" value="$digest" />
@@ -135,6 +146,8 @@
   <input type="hidden" name="dir"    value="$dir" />
   <input type="hidden" name="count"  value="$count" />
   $radio $title $name $comment
+  <img src="$comment_keyword" alt="$comment_keyword_img_alt" border="0" hspace="0" vspace="0" />
+  <input type="text"   name="_p_comment_keyword_{$comment_no}" id="_p_comment_keyword_{$comment_no}" size="4" tooltipText="{$tooltip}" />
   <input type="submit" value="{$_pcmt_messages['btn_comment']}" />
   </div>
 EOD;
@@ -185,7 +198,7 @@
 			'collided'=>TRUE
 		);
 
-	check_editable($page, true, true);
+//	check_editable($page, true, true);
 
 	$ret = array('msg' => $_title_updated, 'collided' => FALSE);