Karikatürname adlı üyeden alıntı
Hocam OG taglarının doğru düzenlendiğinden emin ol. Bir de facebook web siteleri için yeni bir beğen kutusu geliştirdi, sitende varsa onu güncelle.//Adding the Open Graph in the Language Attributes
function add_opengraph_doctype( $output ) {
		return $output . ' xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml"';
	}
add_filter('language_attributes', 'add_opengraph_doctype');
//Lets add Open Graph Meta Info
function insert_fb_in_head() {
	global $post;
	if ( !is_singular()) //if it is not a post or a page
		return;
        echo '';
        echo '';
        echo '';
        echo '';
        echo '';
	if(!has_post_thumbnail( $post->ID )) { //the post does not have featured image, use a default image
		$default_image="http://example.com/image.jpg"; //replace this with a default image on your server or an image in your media library
		echo '';
	}
	else{
		$thumbnail_src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'medium' );
		echo '';
	}
	echo "
";
}
add_action( 'wp_head', 'insert_fb_in_head', 5 );//Adding the Open Graph in the Language Attributes
function add_opengraph_doctype( $output ) {
		return $output . ' xmlns:og="http://opengraphprotocol.org/schema/" xmlns:fb="http://www.facebook.com/2008/fbml"';
	}
add_filter('language_attributes', 'add_opengraph_doctype');
//Lets add Open Graph Meta Info
function insert_fb_in_head() {
	global $post;
	if ( !is_singular()) //if it is not a post or a page
		return;
        echo '';
        echo '';
        echo '';
        echo '';
        echo '';
	if(!has_post_thumbnail( $post->ID )) { //the post does not have featured image, use a default image
		$default_image="http://example.com/image.jpg"; //replace this with a default image on your server or an image in your media library
		echo '';
	}
	else{
		$thumbnail_src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'medium' );
		echo '';
	}
	echo "
";
}
add_action( 'wp_head', 'insert_fb_in_head', 5 );