一旦确定了与用户搜索行为最相关的关键词，你需要把关键词插入到内容和HTML中。最重要的区域包括：
虽然关键字优化可以提高搜索流量，但在这个过程中不要牺牲内容的质量。内容首先应该是为用户写的．第二才是为搜索引擎!
当关键词在页面出现太频繁时．很明显就是试图用不诚实的内容来填充页面．欺骗搜索引擎来吸引流量。搜索引擎用一个简单的数学公式和一些基本的逻辑语言，来确定页面是否人为地突出某个词。这个公式可以帮助确定页面的关键词密度。
搜索引擎还查找主要关键词周围的其他词．来确定它们是自然地包含在内容中还是部分为了欺骗性的填充页面的单词。
1.文档名(logo图片文件名，外部CSS文件名)
2.链接标签
3.alt属性
4.表格元素如：
，和summary属性
5.title属性
6.和标签
7. </p>
<p>8.标题标签，尤其是<h1>，<h2>和<h3></p>
<p>9.页面中第一段第一行</p>
<p>10.meta描述</p>
<p>11.<strong>和<em>标签</p>
<p>12.URL</p>
<p>除了在HTML文件中放置关键词，一定要把它们也添加到内容中。在一系列关键字优化中很容易被抓到．并且在你知道之前，内容读起来会很奇怪。</p>
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