diff --git a/admin/action/create_page.php b/admin/action/create_page.php
index ced2024..1a0d17c 100644
--- a/admin/action/create_page.php
+++ b/admin/action/create_page.php
@@ -6,7 +6,8 @@
 	include '../includes/session.php';
 
 	if(isset($_POST['submit'])) {
-		$post_url = $_POST['url'];
+		$post_url = preg_replace('/[^A-Za-z0-9,.-]/u', '', $_POST['url']);
+		$post_url = rtrim($post_url, ',\.\-');
 		$post_content = $_POST['content'];
 	}
 	if(!empty($post_url) && !empty($post_content)) {
@@ -57,20 +58,15 @@
 	</div>
 	<div id="wmd-preview" class="wmd-panel wmd-preview"></div>
 	<script type="text/javascript">
-	(function () {
-		var converter = Markdown.getSanitizingConverter();
-		
-		converter.hooks.chain("preBlockGamut", function (text, rbg) {
-			return text.replace(/^ {0,3}""" *\n((?:.*?\n)+?) {0,3}""" *$/gm, function (whole, inner) {
-				return "<blockquote>" + rbg(inner) + "</blockquote>\n";
-			});
-		});
-		
-		var editor = new Markdown.Editor(converter);
-		
-		editor.run();
-	})();
-	</script>
+		<script type="text/javascript">
+		(function () {
+			var converter = new Markdown.Converter();
+
+			var editor = new Markdown.Editor(converter);
+			
+			editor.run();
+		})();
+		</script>
 </div>
 </div>	
 </body>
diff --git a/admin/action/create_post.php b/admin/action/create_post.php
index e6a55ff..8d3c67a 100644
--- a/admin/action/create_post.php
+++ b/admin/action/create_post.php
@@ -6,9 +6,11 @@
 	include '../includes/session.php';
 
 	if(isset($_POST['submit'])) {
-		$post_date = date('Y-m-d-H');
-		$post_tag = $_POST['tag'];
-		$post_url = $_POST['url'];
+		$post_date = date('Y-m-d-H-i');
+		$post_tag = preg_replace('/[^A-Za-z0-9,.-]/u', '', $_POST['tag']);
+		$post_tag = rtrim($post_tag, ',\.\-');
+		$post_url = preg_replace('/[^A-Za-z0-9,.-]/u', '', $_POST['url']);
+		$post_url = rtrim($post_url, ',\.\-');
 		$post_content = $_POST['content'];
 	}
 	if(!empty($post_tag) && !empty($post_url) && !empty($post_content)) {
@@ -60,21 +62,15 @@
 		</form>
 	</div>
 	<div id="wmd-preview" class="wmd-panel wmd-preview"></div>
-	<script type="text/javascript">
-	(function () {
-		var converter = Markdown.getSanitizingConverter();
-		
-		converter.hooks.chain("preBlockGamut", function (text, rbg) {
-			return text.replace(/^ {0,3}""" *\n((?:.*?\n)+?) {0,3}""" *$/gm, function (whole, inner) {
-				return "<blockquote>" + rbg(inner) + "</blockquote>\n";
-			});
-		});
-		
-		var editor = new Markdown.Editor(converter);
-		
-		editor.run();
-	})();
-	</script>
+		<script type="text/javascript">
+		(function () {
+			var converter = new Markdown.Converter();
+
+			var editor = new Markdown.Editor(converter);
+			
+			editor.run();
+		})();
+		</script>
 </div>
 </div>	
 </body>
diff --git a/admin/action/edit_bio.php b/admin/action/edit_bio.php
index e3d94f9..5afc9fb 100644
--- a/admin/action/edit_bio.php
+++ b/admin/action/edit_bio.php
@@ -37,7 +37,7 @@
 	<meta charset="utf-8" />
 	<meta http-equiv="X-UA-Compatible" content="IE=edge" />
 	<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" user-scalable="no" />
-	<title>Edit post</title>
+	<title>Edit bio</title>
 	<link rel="stylesheet" type="text/css" href="../resources/style.css" />
 	<link rel="stylesheet" type="text/css" href="../editor/css/editor.css" />
 	<script type="text/javascript" src="../editor/js/Markdown.Converter.js"></script>
@@ -65,14 +65,8 @@
 		<div id="wmd-preview" class="wmd-panel wmd-preview"></div>
 		<script type="text/javascript">
 		(function () {
-			var converter = Markdown.getSanitizingConverter();
-			
-			converter.hooks.chain("preBlockGamut", function (text, rbg) {
-				return text.replace(/^ {0,3}""" *\n((?:.*?\n)+?) {0,3}""" *$/gm, function (whole, inner) {
-					return "<blockquote>" + rbg(inner) + "</blockquote>\n";
-				});
-			});
-			
+			var converter = new Markdown.Converter();
+
 			var editor = new Markdown.Editor(converter);
 			
 			editor.run();
diff --git a/admin/action/edit_page.php b/admin/action/edit_page.php
index 6f04bef..becbd72 100644
--- a/admin/action/edit_page.php
+++ b/admin/action/edit_page.php
@@ -57,14 +57,8 @@
 		<div id="wmd-preview" class="wmd-panel wmd-preview"></div>
 		<script type="text/javascript">
 		(function () {
-			var converter = Markdown.getSanitizingConverter();
-			
-			converter.hooks.chain("preBlockGamut", function (text, rbg) {
-				return text.replace(/^ {0,3}""" *\n((?:.*?\n)+?) {0,3}""" *$/gm, function (whole, inner) {
-					return "<blockquote>" + rbg(inner) + "</blockquote>\n";
-				});
-			});
-			
+			var converter = new Markdown.Converter();
+
 			var editor = new Markdown.Editor(converter);
 			
 			editor.run();
diff --git a/admin/action/edit_post.php b/admin/action/edit_post.php
index 26d1d29..f165e9a 100644
--- a/admin/action/edit_post.php
+++ b/admin/action/edit_post.php
@@ -32,7 +32,6 @@
 	<link rel="stylesheet" type="text/css" href="../resources/style.css" />
 	<link rel="stylesheet" type="text/css" href="../editor/css/editor.css" />
 	<script type="text/javascript" src="../editor/js/Markdown.Converter.js"></script>
-    <script type="text/javascript" src="../editor/js/Markdown.Sanitizer.js"></script>
     <script type="text/javascript" src="../editor/js/Markdown.Editor.js"></script>
 </head>
 <body>
@@ -57,14 +56,8 @@
 		<div id="wmd-preview" class="wmd-panel wmd-preview"></div>
 		<script type="text/javascript">
 		(function () {
-			var converter = Markdown.getSanitizingConverter();
-			
-			converter.hooks.chain("preBlockGamut", function (text, rbg) {
-				return text.replace(/^ {0,3}""" *\n((?:.*?\n)+?) {0,3}""" *$/gm, function (whole, inner) {
-					return "<blockquote>" + rbg(inner) + "</blockquote>\n";
-				});
-			});
-			
+			var converter = new Markdown.Converter();
+
 			var editor = new Markdown.Editor(converter);
 			
 			editor.run();
diff --git a/system/htmly.php b/system/htmly.php
index d819346..dbf86e6 100644
--- a/system/htmly.php
+++ b/system/htmly.php
@@ -161,7 +161,7 @@ get('/:year/:month/:name', function($year, $month, $name){
 		'canonical' => $current->url,
 		'description' => $description = get_description($current->body),
 		'bodyclass' => 'inpost',
-		'breadcrumb' => '<span typeof="v:Breadcrumb"><a property="v:title" rel="v:url" href="' . config('site.url') .  '">' .config('breadcrumb.home'). '</a></span> &#187; <span typeof="v:Breadcrumb"><a property="v:title" rel="v:url" href="' . $current->tagurl .'">' . $current->tag . '</a></span> &#187; ' . $current->title,
+		'breadcrumb' => '<span typeof="v:Breadcrumb"><a property="v:title" rel="v:url" href="' . config('site.url') .  '">' .config('breadcrumb.home'). '</a></span> &#187; '. $current->tagb . ' &#187; ' . $current->title,
 		'prev' => has_prev($prev),
 		'next' => has_next($next),
 		'type' => 'blogpost',
diff --git a/system/includes/functions.php b/system/includes/functions.php
index 5582736..4032f9d 100644
--- a/system/includes/functions.php
+++ b/system/includes/functions.php
@@ -130,11 +130,21 @@ function get_posts($posts, $page = 1, $perpage = 0){
 		// The post URL
 		$post->url = site_url().date('Y/m', $post->date).'/'.str_replace('.md','',$arr[2]);
 		
-		// The post tag
-		$post->tag = str_replace($replaced,'',$arr[1]);
+		$tag = array();
+		$url = array();
 		
-		// The post tag url
-		$post->tagurl = site_url(). 'tag/' . $arr[1];
+		$t = explode(',', $arr[1]);
+		foreach($t as $tt) {
+			$tag[] = array($tt, site_url(). 'tag/' . $tt);
+		}
+		
+		foreach($tag as $a) {
+			$url[] = '<span typeof="v:Breadcrumb"><a property="v:title" rel="v:url" href="' .  $a[1] . '">'. $a[0] .'</a></span>';
+		}
+		
+		$post->tag = implode(', ', $url);
+		
+		$post->tagb = implode(' » ', $url);
 
 		// Get the contents and convert it to HTML
 		$content = MarkdownExtra::defaultTransform(file_get_contents($filepath));
@@ -208,8 +218,14 @@ function get_tag($tag, $page, $perpage){
 	foreach ($posts as $index => $v) {
 		$url = $v['filename'];
 		$str = explode('_', $url);
-		if($tag === $str[1]){
-			$tmp[] = $v;
+		$mtag = explode(',', $str[1]);
+		$etag = explode(',', $tag);
+		foreach ($mtag as $t) {
+			foreach ($etag as $e) {
+				if($t === $e){
+					$tmp[] = $v;
+				}
+			}
 		}
 	}
 	
@@ -389,11 +405,21 @@ function get_keyword($keyword){
 				// The post URL
 				$post->url = site_url().date('Y/m', $post->date).'/'.str_replace('.md','',$arr[2]);
 				
-				// The post tag
-				$post->tag = str_replace($replaced,'',$arr[1]);
+				$tag = array();
+				$url = array();
 				
-				// The post tag URL
-				$post->tagurl = site_url(). 'tag/' . $arr[1];
+				$t = explode(',', $arr[1]);
+				foreach($t as $tt) {
+					$tag[] = array($tt, site_url(). 'tag/' . $tt);
+				}
+				
+				foreach($tag as $a) {
+					$url[] = '<span typeof="v:Breadcrumb"><a property="v:title" rel="v:url" href="' .  $a[1] . '">'. $a[0] .'</a></span>';
+				}
+				
+				$post->tag = implode(', ', $url);
+				
+				$post->tagb = implode(' » ', $url);
 
 				// Extract the title and body
 				$arr = explode('</h1>', $content);
@@ -414,9 +440,8 @@ function get_keyword($keyword){
 
 // Get related posts base on post tag.
 function get_related($tag) {
-
 	$perpage = config('related.count');
-	$posts = get_tag($tag, 1, $perpage+1);
+	$posts = get_tag(strip_tags($tag), 1, $perpage+1);
 	$tmp = array();
 	$req = $_SERVER['REQUEST_URI'];
 	
@@ -527,7 +552,10 @@ function tag_cloud() {
 		$arr = explode('_', $v);
 		
 		$data = $arr[1];
-		$tags[] = $data;
+		$mtag = explode(',', $data);
+		foreach($mtag as $etag) {
+			$tags[] = $etag;
+		}
 		
 	}
 	
diff --git a/themes/clean/main.html.php b/themes/clean/main.html.php
index 03a7535..0d821ae 100644
--- a/themes/clean/main.html.php
+++ b/themes/clean/main.html.php
@@ -16,7 +16,7 @@
 	<div class="post <?php echo $class ?>" itemprop="blogPost" itemscope="itemscope" itemtype="http://schema.org/BlogPosting">
 		<div class="main">
 			<h2 class="title-index" itemprop="name"><a href="<?php echo $p->url?>"><?php echo $p->title ?></a></h2>
-			<div class="date"><span itemprop="datePublished"><?php echo date('d F Y', $p->date)?></span> - Posted in <span itemprop="articleSection"><a href="<?php echo $p->tagurl ?>"><?php echo $p->tag ?></a></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span><?php if (disqus_count() == true):?> - <span><a href="<?php echo $p->url?>#disqus_thread">Comments</a></span><?php endif;?></div>
+			<div class="date"><span itemprop="datePublished"><?php echo date('d F Y', $p->date)?></span> - Posted in <span itemprop="articleSection"><?php echo $p->tag ?></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span><?php if (disqus_count() == true):?> - <span><a href="<?php echo $p->url?>#disqus_thread">Comments</a></span><?php endif;?></div>
 			<div class="teaser-body" itemprop="articleBody">
 				<?php if (config('img.thumbnail') == 'true'):?>
 					<?php echo get_thumbnail($p->body)?>
diff --git a/themes/clean/post.html.php b/themes/clean/post.html.php
index 09da86c..9871750 100644
--- a/themes/clean/post.html.php
+++ b/themes/clean/post.html.php
@@ -6,7 +6,7 @@
 		<?php endif;?>
 		<h1 class="title-post" itemprop="name"><?php echo $p->title ?></h1>
 		<?php if ($type == 'blogpost'):?>
-			<div class="date"><span itemprop="datePublished"><a href="<?php echo $p->archive ?>" title="Show all posts made on this day"><?php echo date('d F Y', $p->date)?></a></span> - Posted in <span itemprop="articleSection"><a href="<?php echo $p->tagurl ?>"><?php echo $p->tag ?></a></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span> - <span><a href="<?php echo $p->url ?>" rel="permalink">Permalink</a></span></div>
+			<div class="date"><span itemprop="datePublished"><a href="<?php echo $p->archive ?>" title="Show all posts made on this day"><?php echo date('d F Y', $p->date)?></a></span> - Posted in <span itemprop="articleSection"><?php echo $p->tag ?></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span> - <span><a href="<?php echo $p->url ?>" rel="permalink">Permalink</a></span></div>
 		<?php endif;?>
 		<div class="post-body" itemprop="articleBody">
 			<?php echo $p->body; ?>
diff --git a/themes/default/main.html.php b/themes/default/main.html.php
index 03a7535..0d821ae 100644
--- a/themes/default/main.html.php
+++ b/themes/default/main.html.php
@@ -16,7 +16,7 @@
 	<div class="post <?php echo $class ?>" itemprop="blogPost" itemscope="itemscope" itemtype="http://schema.org/BlogPosting">
 		<div class="main">
 			<h2 class="title-index" itemprop="name"><a href="<?php echo $p->url?>"><?php echo $p->title ?></a></h2>
-			<div class="date"><span itemprop="datePublished"><?php echo date('d F Y', $p->date)?></span> - Posted in <span itemprop="articleSection"><a href="<?php echo $p->tagurl ?>"><?php echo $p->tag ?></a></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span><?php if (disqus_count() == true):?> - <span><a href="<?php echo $p->url?>#disqus_thread">Comments</a></span><?php endif;?></div>
+			<div class="date"><span itemprop="datePublished"><?php echo date('d F Y', $p->date)?></span> - Posted in <span itemprop="articleSection"><?php echo $p->tag ?></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span><?php if (disqus_count() == true):?> - <span><a href="<?php echo $p->url?>#disqus_thread">Comments</a></span><?php endif;?></div>
 			<div class="teaser-body" itemprop="articleBody">
 				<?php if (config('img.thumbnail') == 'true'):?>
 					<?php echo get_thumbnail($p->body)?>
diff --git a/themes/default/post.html.php b/themes/default/post.html.php
index 09da86c..9871750 100644
--- a/themes/default/post.html.php
+++ b/themes/default/post.html.php
@@ -6,7 +6,7 @@
 		<?php endif;?>
 		<h1 class="title-post" itemprop="name"><?php echo $p->title ?></h1>
 		<?php if ($type == 'blogpost'):?>
-			<div class="date"><span itemprop="datePublished"><a href="<?php echo $p->archive ?>" title="Show all posts made on this day"><?php echo date('d F Y', $p->date)?></a></span> - Posted in <span itemprop="articleSection"><a href="<?php echo $p->tagurl ?>"><?php echo $p->tag ?></a></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span> - <span><a href="<?php echo $p->url ?>" rel="permalink">Permalink</a></span></div>
+			<div class="date"><span itemprop="datePublished"><a href="<?php echo $p->archive ?>" title="Show all posts made on this day"><?php echo date('d F Y', $p->date)?></a></span> - Posted in <span itemprop="articleSection"><?php echo $p->tag ?></span> by <span itemprop="author"><a href="<?php echo $p->authorurl ?>"><?php echo $p->author ?></a></span> - <span><a href="<?php echo $p->url ?>" rel="permalink">Permalink</a></span></div>
 		<?php endif;?>
 		<div class="post-body" itemprop="articleBody">
 			<?php echo $p->body; ?>