diff --git a/_includes/header.html b/_includes/header.html
index 6980f74..c7c8871 100644
--- a/_includes/header.html
+++ b/_includes/header.html
@@ -19,10 +19,10 @@
             <meta property="og:description" content="{{ page.description }}" />
         {% endif %}
 
-        <link rel="canonical" content="{{ page.url }}" />
+        <link href="{{ page.url }}" rel="canonical" />
         <meta property="og:title" content="{% if page.title == 'Home' %}Danny Berger{% else %}{{ page.title }}{% endif %}" />
-        <meta property="og:url" content="{{ page.url }}?utm_campaign=ref&utm_medium=def&utm_source=opengraph" />
-        <meta name="twitter:url" content="{{ page.url }}?utm_campaign=ref&utm_medium=def&utm_source=twitter" />
+        <meta property="og:url" content="{{ page.url }}?utm_campaign=ref&amp;utm_medium=def&amp;utm_source=opengraph" />
+        <meta name="twitter:url" content="{{ page.url }}?utm_campaign=ref&amp;utm_medium=def&amp;utm_source=twitter" />
 
         <script type="text/javascript">
             var _gaq = _gaq || [];
diff --git a/_layouts/post.html b/_layouts/post.html
index bbd2738..77a5d44 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -4,10 +4,10 @@
         <div class="timeline">
             <time datetime="{{ page.date|date_to_xmlschema }}" title="{{ page.date|date_to_xmlschema }}"><strong>{{ page.date|date:"%b %d"|upcase }}</strong><br />{{ page.date|date:"%Y" }}</time>
             {% if page.location %}
-                <a href="https://maps.google.com/maps?hl=en&ll={{ page.location.latitude }},{{ page.location.longitude }}&t=w&z=12"><img height="49" src="https://maps.googleapis.com/maps/api/staticmap?center={{ page.location.latitude }},{{ page.location.longitude }}&zoom=9&size=98x98&sensor=false" title="{{ page.location.title }}" width="49" /></a>
+                <a href="https://maps.google.com/maps?hl=en&ll={{ page.location.latitude }},{{ page.location.longitude }}&t=w&z=12"><img alt="map" height="49" src="https://maps.googleapis.com/maps/api/staticmap?center={{ page.location.latitude }},{{ page.location.longitude }}&zoom=9&size=98x98&sensor=false" title="{{ page.location.title }}" width="49" /></a>
             {% endif %}
             {% if page.code %}
-                <a href="{{ page.code }}"><img height="49" src="/include/icons/code.png" title="{{ page.location.title }}" width="49" /></a>
+                <a href="{{ page.code }}"><img alt="code" height="49" src="/include/icons/code.png" title="{{ page.location.title }}" width="49" /></a>
             {% endif %}
         </div>
         <div class="social">
diff --git a/blog/_posts/2013-03-07-comparing-php-application-definitions.md b/blog/_posts/2013-03-07-comparing-php-application-definitions.md
index 3e8394f..10dcda5 100644
--- a/blog/_posts/2013-03-07-comparing-php-application-definitions.md
+++ b/blog/_posts/2013-03-07-comparing-php-application-definitions.md
@@ -19,7 +19,7 @@ To that end, I made a prototype for a language-intelligent/OOP-diff/structured d
 the programmatic changes in an easily readable report which links definitions back to their file and line number for
 more detailed review...
 
-<img height="343" src="/blog-data/2013-03-07-comparing-php-application-definitions/console-diff.png" width="536" />
+<img alt="symfony/console example" height="343" src="/blog-data/2013-03-07-comparing-php-application-definitions/console-diff.png" width="536" />
 
 
 ### Usage