关于meta keywords那些事儿

昨天有位童鞋问我，有没有原始的文章说seo可以不用考虑keywords。我懵了，据记忆中所记得都要考虑keywords。但人家问了，说明应该是有搜索引擎已经放弃考虑keywords了，查了wiki和msdn。

摘自wiki：The keywords attribute

Search engines began dropping support for metadata provided by the meta element in 1998,
and by the early 2000s, most search engines had veered completely away from reliance on meta
elements. In July 2002, AltaVista, one of the last major search engines to still offer support, finally
stopped considering them.

No consensus exists whether or not the keywords attribute has any effect on ranking at any
of the major search engines today. It is speculated that it does, if the keywords used in the meta
can also be found in the page copy itself. With respect to Google, thirty-seven leaders in search
engine optimization concluded in April 2007 that the relevance of having your keywords in the
meta-attribute keywords is little to none and in September 2009 Matt Cutts of Google announced
that they are no longer taking keywords into account whatsoever. However, both these articles
suggest that Yahoo! still makes use of the keywords meta tag in some of its rankings. Yahoo! itself
claims support for the keywords meta tag in conjunction with other factors for improving search
rankings. In Oct 2009 Search Engine Round Table announced that "Yahoo Drops The Meta Keywords
Tag Also" but informed us that the announcement made by Yahoo's Senior Director of Search was
incorrect. In the corrected statement Yahoo Senior Director of Search states that "...What changed
 with Yahoo's ranking algorithms is that while we still index the meta keyword tag, the ranking
importance given to meta keyword tags receives the lowest ranking signal in our system.... it will
actually have less effect than introducing those same words in the body of the document, or any
other section.

摘自msdn:

HTML meta elements can be used to improve search-engine listings. The "keywords" meta
element is either not used at all or is given very little weight by the major search engines.

If there is no "keywords" meta element in the head element of the page markup, the meta
element is added to the page when the page is rendered. If the page markup already has a
"keywords" meta element, this property gets or sets the content attribute of the meta element.

在这里可以看出主流的搜索引擎算法中已经放弃考虑keywords，除了极少个数例如Yahoo还在考虑。作为本土的主流搜索引擎百度是否考虑？下面是我摘自《Search Engine Optimization for Baidu》的原话。

Like Google, Title tag is also very important. Unlike Google, Meta description and Meta
keywords tags are still very useful in improving ranking in Baidu. As always, we do recommend
clients add meaningful Meta description and keyword tags because they are still important for
some popular localized search engines.

从上述可以看出，百度搜索引擎还是考虑keywords和description。

让我们对比下google和baidu的关键因素的不同之处

唉，悲催，这样子其实做国内站点的优化还是得堆关键字~~~

竟然作为本土老大的百度，那么就来总结一下百度的seo优化tips

1. 1. Title and Meta Tags
2. 2. Content
3. 3. Linking
4. 4. Content Language(由于百度是在中国大陆发展的，如果你的网站有简体中文，你的网站在百度上就很容易被搜索出来)
5. 5. Alt Tag
6. 6. Server
7. 7. Geographical Market（中国是一个大市场，如果你的站点用户群体主要是中国大陆的，你的站点应当使用简体中文；如果你的目标市场是香港或者台湾，你的站点应该使用繁体中文。）