在其它网上看到一篇老外的文章，说的是如何快速的逃脱沙盒,方法当中没有什么新意，但是他对为什么要存在沙盒进行了描述,原文如下:

Google’s algorithms rely heavily on inbound links to determine the value of a web page. But a brand new web page has not had the opportuníty to attract any inbound links, because after all, it is a brand new web page. So Google gives new web pages the benefit of a doubt.

News stories are a good example of web pages that may very well be important to the world-at-large, but their importance cannot be determined by the number of inbound links available to that page.

As a result, all brand new web pages on the Internet are given an intrinsic value by Google, as if the pages housed a news story. But what was important thirty days ago, will not necessarily be important today. So news stories are given early value and then their value fades with time.

Once the news cycle is completed, the web page will slide down to where it deserves to be according to the normal Google algorithms. This often means that a new web page will disappear into Google oblivion (or the theoretical Google Sandbox), if after 30 days the page has not generated any link popularity of its own.

 英文好的朋友请看上面的原文,下面是一个大概的总结。

总的来说, google最看重还是外链。但是如果现在有一个新的新闻页面。由于其是新页面，外部链接非常的少,如果按一般的Google 算法来进行排序的话,这个新页面的提名会非常的差,用户搜索的时候就看不到他想要的最新新闻页面,如果这样的话用户体验会非常的差。所以Google会对这种新页面给予一定的特殊照顾,使其能够获得好的排名,提高用户体验。当一定的周期过后(即该新闻已过时)，对该新闻页面的特殊照顾即会取消,然后该页面就得和其它的页面进行常规的竞争,由于该页面外部链接非常少，所以排名会很差，于是常见的一些泥沙盒效应就出来了。

个人认为该说法还是有一定的道理的，但并不能解释为什么有的老站突然整站的提名掉了一大块的现像。

Revonqi 原创，转载请注明出处。
http://www.darwinmarketing.com/blogcn/seo/112

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