<html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml" xmlns

g="http://opengraphprotocol.org/schema/" <?php language_attributes(); ?>>
<?php if (have_posts()):while(have_posts()):the_post();endw hile;endif;?>
<!-- Facebook Opengraph -->
<meta property="fb:app_id" content="my_app_id" />
<meta property="fb:admins" content="my_admin_id" />
<meta property="og:url" content="<?php the_permalink() ?>"/>
<?php if (is_single()) { ?>
<meta property="og:title" content="<?php single_post_title(''); ?>" />
<meta property="og:description" content="<?php echo strip_tags(get_the_excerpt($post->ID)); ?>" />
<meta property="og:type" content="article" />
<meta property="og:image" content="<?php echo wp_get_attachment_thumb_url( get_post_thumbnail_id( $post->ID ) ) ?>" />
<?php } else { ?>
<meta property="og:site_name" content="<?php bloginfo('name'); ?>" />
<meta property="og:description" content="<?php bloginfo('description'); ?>" />
<meta property="og:type" content="website" />
<meta property="og:image" content="<?php bloginfo('template_url') ?>/logo.jpg" />
<?php } ?>