4点一致就是 title, description, keywords, 文章内容 的一致
58同城 www.58.com 做了很强的seo优化，简单解析下html代码
1.首页
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<title>58同城-领先的分类信息网站-免费查询发布各类生活信息</title><meta name=”description” content=”免费发布信息,查询分类广告,租房合租信息,招聘兼职,二手转让,征婚交友,家政保姆,拼车拼游,买卖转让二手家电,电脑,手机,票务等相关个人生活信息，尽在58同城网。”><meta name=”keywords” content=”58同城分类信息网站”> <script src=”http://pic2.58.com/js/index/3_0/index.js”></script>
</head>
2.分类列表页
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<title>【北京二手车|北京二手车市场信息】 – 58.com</title>
<meta name=”description” content=’北京二手车交易频道为您提供北京二手车交易频道信息，在这里有大量的北京二手车交易频道信息供您查询。夏利经典7101,北京出售1994年黑色尼桑A31,个人急转01年6月宁波美日 原装丰田8A发动机,-58.com ‘ />
<meta name=”keywords” content=’二手车,北京二手车,北京二手车市场信息’ />
<link type=”text/css” rel=”stylesheet” href=”http://pic2.58.com/css/5_0/basenew.css” />
<script type=”text/javascript” src=”http://pic2.58.com/js/5_0/list/date.js” language=”javascript”></script>
</head>
红色为变量，在 description 里最后列出了从数据库读出的最后几条信息
3.详细页
<TITLE>广州市粤诚二手车行–首页</TITLE>
<META HTTP-EQUIV=”Content-Type” CONTENT=”text/html; charset=gb2312″>
<meta name=”description” content=”二手汽车“>
<meta name=”keywords” content=”二手汽车“>
(标题未注明“转载”的为“原创”，转载请注明来源，欢迎来信交流 wangchao123.com@gmail.com)
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