add rich snippet stuff for date

gistfile1.txt

function woo_post_meta() {
  if ( is_page() ) { return; }
	
	$post_info = '<span class="small">' . __( 'By', 'woothemes' ) . '</span> [post_author_posts_link] <span class="small">' . _x( 'on', 'post datetime', 'woothemes' ) . '</span><span class="updated"> [post_date] </span><span class="small">' . __( 'in', 'woothemes' ) . '</span> [post_categories before=""] ' . ' [post_edit]';
printf( '<div class="post-meta">%s</div>' . "\n", apply_filters( 'woo_filter_post_meta', $post_info ) );

} // End woo_post_meta()