wordpress.com is doing it right

[root@unitedgamesfactory /]# curl -I wordpress.com HTTP/1.1 200 OK Server: nginxDate: Mon, 04 Jul 2011 22:32:02 GMT Content-Type: text/html; charset=UTF-8 Connection: close Vary: Accept-Encoding Last-Modified: Mon, 04 Jul 2011 22:27:25 +0000 Cache-Control: max-age=23, must-revalidate Vary: Cookie Set-Cookie: hiab=off; path=/; domain=.wordpress.com X-hacker: If you’re reading this, you should visit automattic.com/jobs and apply to join the fun, mention this header. X-Pingback: http://wordpress.com/xmlrpc.php Link: http:; rel=shortlink X-nananana: Batcache </http:>