点石首页<header>的这些源代码有什么作用？

点石首页的源代码里这些东西对seo有什么用处？
主要是不知道“<link rel='archives' title='九月 2007' href='http://www.dunsh.org/2007/09/' />”是什么意思呢，是不是对seo作用很大？

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head profile="http://gmpg.org/xfn/11">

<title> 点石互动</title>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<meta name="robots" content="follow, all" />

<link rel="alternate" type="application/rss+xml" title="RSS 2.0" href="http://www.dunsh.org/feed/" />

<link rel="alternate" type="text/xml" title="RSS .92" href="http://www.dunsh.org/feed/rss/" />

<link rel="alternate" type="application/atom+xml" title="Atom 0.3" href="http://www.dunsh.org/feed/atom/" />

<link rel="pingback" href="http://www.dunsh.org/xmlrpc.php" />

<link rel='archives' title='九月 2007' href='http://www.dunsh.org/2007/09/' />
<link rel='archives' title='八月 2007' href='http://www.dunsh.org/2007/08/' />
<link rel='archives' title='七月 2007' href='http://www.dunsh.org/2007/07/' />
<link rel='archives' title='六月 2007' href='http://www.dunsh.org/2007/06/' />
<link rel='archives' title='五月 2007' href='http://www.dunsh.org/2007/05/' />
<link rel='archives' title='四月 2007' href='http://www.dunsh.org/2007/04/' />

<link rel='archives' title='三月 2007' href='http://www.dunsh.org/2007/03/' />
<link rel='archives' title='二月 2007' href='http://www.dunsh.org/2007/02/' />
<link rel='archives' title='一月 2007' href='http://www.dunsh.org/2007/01/' />
<link rel='archives' title='十二月 2006' href='http://www.dunsh.org/2006/12/' />
<link rel='archives' title='十一月 2006' href='http://www.dunsh.org/2006/11/' />
<link rel='archives' title='十月 2006' href='http://www.dunsh.org/2006/10/' />
<link rel='archives' title='九月 2006' href='http://www.dunsh.org/2006/09/' />
<link rel='archives' title='八月 2006' href='http://www.dunsh.org/2006/08/' />
<link rel='archives' title='七月 2006' href='http://www.dunsh.org/2006/07/' />

<style type="text/css" media="screen">



</style>

<link rel="EditURI" type="application/rsd+xml" title="RSD" href="http://www.dunsh.org/xmlrpc.php?rsd" />

</head>