/**
 * Append the missing persons name to the RSS title output, if available.
 */
add_filter( 'the_title_rss', 'qpsmissingperson_append_name_rss_title', 10, 1 );
function qpsmissingperson_append_name_rss_title( $title )
{
    global $post;

    $missingperson_meta_boxes = get_post_meta( $post->ID, 'missingperson_meta_boxes', true );
    $name = !empty( $missingperson_meta_boxes[ 'extra' ][ 'name' ] ) ? $missingperson_meta_boxes[ 'extra' ][ 'name' ] : '';

    if ( !empty( $name ) )
        $title = $name . ' - ' . $title;

    return $title;
}