Crawling Behavior & Optimization Strategies

我在这里做一下简要翻译，英文好的就不要笑话了。

Yahoo places top priority on high keyword density. Some have suggested that keywords in the meta title, or high title density, receiving about 10% weight in the algorithm; keywords in alt tags, meta tags, and meta description receive about 3%; header tags, and outbound anchor link text, and content keywords receive another 3% weight in the algorithm.

关键字密度在Yahoo的排名规则还是占有很大的比重，一些人觉得如果在title标签里面设置尽可能高的密度会在整个排名得分中占有10％的比例，而关键字出现在alt、meta、描述等标签中会占有3％的比例；header 标签 导出链接文字和正文关键字也会占有3％的比例

It seems at first glance that their algorithm is a complete opposite to the priorities placed in Google’s algorithms, but this is not really the case. In fact, some relate the current Yahoo algorithm to a Google algorithm of 2 years ago. Since the integration of the Inktomi algorithm, Yahoo’s search engine is placing a higher weight on backlinks, however we still show it’s not a driving force of the algorithm like in Google’s.

从表面上看，Yahoo的算法和google的算法都很大的不同，但事实并不是这样，其中有些因素和google两年前的算法比较相近。自从Yahoo收购了Inktomi后，Yahoo在算法上更看重于反向链接了，但是我们仍然相信Yahoo的算法并不是从google派生而来

When optimizing for Yahoo, it’s important to remember that Yahoo continues to be very much about on-page factors like content, keyword usage and density, bold text, and header tags; and not nearly as much about off-page factors, such as inbound links, anchor text, and so on. Yahoo also likes to see keywords in the actual URL of the site or page, but does shows preference for bold and <h1> text.

当优化Yahoo时，应该记住Yahoo始终很看重页面因素，像：“正文、关键字用法和密度、粗体、header标签” 而不是非页面因素，比如像：“导入链接、链接文字等等”。Yahoo喜欢关键字出现在实际的网站的URL或者页面重，但这里并没有显示说Yahoo偏爱用bold和<h1>来加强的文字

While Google’s preferred keyword and tag density is roughly 1.5%, Yahoo’s optimal is twice that, or 3%. The higher ranked sites in Yahoo have between 2.7% and 3.3% keyword density. Other keyword factors to consider are in the title tag, with 15 to 20%. The title tag is one of the more important on page elements for the new Yahoo algorithm.

google的首选关键字和标签的密度大概是1.5％，而Yahoo的最佳选择是它的两倍3％，这些在Yahoo中取得好位置的关键字密度大概是在2.7％－3.3％，其它因素像title标签大概是在15％－20％之间。在Yahoo的新算法中，title标签是最页面因素中重要的

Yahoo is one of the few search engines that still look at Keyword meta tags, although we have certainly seen the priority shift away from this recently, as this element continues to be abused by spammers.

近来，我们看到关键字因素在得分中占有越来越占的比例，因为这种因素仍然被滥用，但Yahoo仍是目前为数不多的、坚持把关键字标签算入排名得分的搜索引擎

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