Meta Keywords 对 Google 基本无效了
Matt Cutts 在 Webmaster Central Blog 上发表了“Google does not use the keywords meta tag in web ranking”，（正式宣布）Meta Keywords 对 Google 排名基本没有影响了，而且也不会再作为排名的因素。
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Recently we received some questions about how Google uses (or more accurately, doesn't use) the "keywords" meta tag in ranking web search results. Suppose you have two website owners, Alice and Bob. Alice runs a company called AliceCo and Bob runs BobCo. One day while looking at Bob's site, Alice notices that Bob has copied some of the words that she uses in her "keywords" meta tag. Even more interesting, Bob has added the words "AliceCo" to his "keywords" meta tag. Should Alice be concerned?
At least for Google's web search results currently (September 2009), the answer is no. Google doesn't use the "keywords" meta tag in our web search ranking. This video explains more, or see the questions below.
视频传不上来，点击这里查看
Q: Does Google ever use the "keywords" meta tag in its web search ranking?
A: In a word, no. Google does sell a Google Search Appliance, and that product has the ability to match meta tags, which could include the keywords meta tag. But that's an enterprise search appliance that is completely separate from our main web search. Our web search (the well-known search at Google.com that hundreds of millions of people use each day) disregards keyword metatags completely. They simply don't have any effect in our search ranking at present.
Q: Why doesn't Google use the keywords meta tag?
A: About a decade ago, search engines judged pages only on the content of web pages, not any so-called "off-page" factors such as the links pointing to a web page. In those days, keyword meta tags quickly became an area where someone could stuff often-irrelevant keywords without typical visitors ever seeing those keywords. Because the keywords meta tag was so often abused, many years ago Google began disregarding the keywords meta tag.
Q: Does this mean that Google ignores all meta tags?
A: No, Google does support several other meta tags. This meta tags page documents more info on several meta tags that we do use. For example, we do sometimes use the "description" meta tag as the text for our search results snippets, as this screenshot shows:
Even though we sometimes use the description meta tag for the snippets we show, we still don't use the description meta tag in our ranking.
Q: Does this mean that Google will always ignore the keywords meta tag?
A: It's possible that Google could use this information in the future, but it's unlikely. Google has ignored the keywords meta tag for years and currently we see no need to change that policy.
作者：樂思蜀
原文：Meta Keywords 对 Google 基本无效了
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也有可能是Google的欲擒故纵之计，让SEO们理智对待关键词，不要滥用
如果真是这样的话,站长的工作可以少很多了.
再一个,谷歌的网站管理员工具中重复的标签提示肯定会去掉.那时就可以证明这个消息了.
[...] 刚打开我的reader看到乐思蜀写的这篇文章《Meta Keywords 对 Google 基本无效了》，虽然很早以前就听说keyword的作用越来越小了，但这次是matt [...]
很多站长已经不用keywords标签了。这次只是证实了说法
meta keywords无效，那meta description呢？
没细看，meta description也不能用了，这样的话，很多站长会放弃meta description的优化，但如果没有合适的description,网站在搜索结果里的介绍会怎么样？GOOGLE会只能选取一段文字？
我觉得百度在这方面似乎也看得不是很重哦！
感到意外，也觉得在情理之中
“没细看，meta description也不能用了，这样的话，很多站长会放弃meta description的优化，但如果没有合适的description,网站在搜索结果里的介绍会怎么样？GOOGLE会只能选取一段文字？”
文章里说了，Description还是可以用的，只是介绍而已。
"文章里说了，Description还是可以用的，只是介绍而已。"
如果对排名没有帮助，那这介绍写的好与坏，对排名结果不靠前的网站没有任何意义啊，你写的再好，人们也看不到。
还有Title可用吧
搜索引擎排名越来越优化,更注重域名历史和内容质量了
不错，本博客已经被china131站长导航收录
要淡定，Meta keywords无效，那meta Description呢？
深入Tag：www.kjhq.com，哈哈
那就深入研究title优化吧，百度还是挺注重title的
你的栏目静态做的真的很好！
是吗？对于百度了，对于百度有作用吧？
百度好像更注重的是title
这么重要的标签去掉了，难道要有新标签替代？
貌似还是有很多网站 Meta Keywords 写了一大堆，排名还是相当好，将来会不会慢慢K掉就不清楚了，不过这里倒是还可以用来增加关键词密度。
搜索引擎排名越来越优化,更注重域名历史和内容质量了
作用还是有的，只是越来越“黑箱化”了，人工可操作的空间几乎不在。
谷歌，唉谷歌，继续研究中
看没有了Google的日子里，百度是如何发展的！
Meta Keywords 写上三个关键字还是很好的，支持一下
无效，我觉得更好，这样关键词可以多做一些。
google的技术 在很大程序上比其他搜索 牛B多了
这个虽然大家都这么说，但是本人觉的有必要做上关键字，但是不要太多，两三个足以！现在百度对这个也是这种态度，
这是英文优化seoer们要面对的又一大难题！希望能有高手发表一下解决此问题的对策！让我们菜鸟们学习一下！呵呵
个人觉的还是有必要做上去的，应该是描述性的词
个人感觉没事！！这个是用户体验！！！呵呵是有必要的