seo optimize page title

_config.yml

@@ -1,6 +1,8 @@
+title: My blog
+#url: http://www.mydomain.com
+
 markdown: rdiscount
 pygments: true
-#url: http://www.mydomain.com
 permalink: /:year/:month/:day/:title
 
 lsi: true

_layouts/default.html

@@ -7,7 +7,11 @@
 	<meta charset="utf-8">
 	<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
 
-	<title>{{ page.title }}</title>
+	{% if page.title %}
+	<title>{{ page.title }} &raquo; {{ site.title }}</title>
+	{% else %}
+	<title>{{ site.title }}</title>
+	{% endif %}
 	<meta name="description" content="{{ page.description }}">
 
 	<meta name="viewport" content="width=device-width,initial-scale=1">
@@ -26,7 +30,7 @@
 
 <div id="header-container">
 	<header class="wrapper clearfix">
-		<h1 id="title">My blog</h1>
+		<h1 id="title">{{ site.title }}</h1>
 		<nav>{% include menulist.html %}</nav>
 	</header>
 </div>

index.html

@@ -1,6 +1,5 @@
 ---
 layout: default
-title: My blog
 description: This is the landing page
 ---