From the link history teaches you how to judge the quality of the outside chain?

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"The content is king, the link is Emperor" the proverb, the old Ox believed that all seoer can have the understanding. As far as content is concerned, I believe very few people can not understand the simple principle that search engines like fresh food. And for the link to the emperor, the old Ox think can understand comprehensive seoer will be less. Today, the old cow with everyone through the history of the link, analysis of high-quality outside the chain should have the conditions.

In 1997, Baidu founder Robin Li applied for a "hyper-linked file retrieval system and method" patent. Since then, the number of hyperlinks began to become a search engine on the page ranking of the impact of one of the factors. Here is the hyperlink, which we seoer commonly known as "anchor text." Anchor text links to the ranking of the impact, mainly based on the ranking of the page can not fully see what they say, but the need for other pages to give corroboration. In other words, a page ranking, there should be more other pages anchor text links to illustrate his true value. Here, I believe all the seoer should understand, why do the chain to do the anchor text outside the chain it? Here, the old cow also to explain the search engine for anchor text outside the chain of statistical methods. When Yahoo back chain query system no longer embodies, many seoer feel the search engine for the Web page anchor text number has been unable to count. In fact, each search engine has its own statistics base on the number of anchor text, rather than through Yahoo's counter link data statistics. And, Yahoo reflects the number of the chain, but also is only a part of a website chain number, not real data. So, I hope all the seoer can understand, although you release the anchor text chain can not query, but the search engines can be very accurate statistics.

2001 Google founder Laripe Qi based on the link principle, the creation of PR (PageRank) value algorithm. PR is worth the simple meaning is that a page to get the number of backlinks, the higher the page level. Here is not difficult to see, PR is only a page of the number of links to calculate, and the content of the Web page is not directly related. Many seoer often for the old cow, the user experience is good, original degree high still have what jump rate low, can raise PR value? These are not related to the way PR is calculated, so it has nothing to do with PR value. PR value is a page to get the link degree is related, that is to say, the number of pages linked to the higher the PR level of the page, your Web site's PR will be higher.

2001 The hilltop algorithm was studied by Krishna Baharat, and the patent was applied. The hilltop algorithm can be understood as the PR value associated with the Web page. We all know that the PR value is only the link degree of a page to calculate the value of the link relationship. But the hilltop algorithm, mainly is the webpage specific key word and the topic link relation composition numerical value, alone as the ranking calculation Appraisal standard. Let's just think of a recycling web page that links to a food and beverage Web page, and what does such a link give to the Web page? It is not difficult to find out why we have to find a more relevant website when we exchange links or release the chain. This is based on the hilltop algorithm.

In 2004, Stanford University and Yahoo jointly developed the TR (TrustRank) algorithm, which is also a ranking algorithm for link relationships. The English meaning of tr can be translated into the Trust Index, which is mainly based on whether the trusted link can be used as the evaluation basis. When the TR algorithm appears, we can see that the search engine's link to the ranking of the page has once again raised one level. It is not the number of links in a page ranking the better, but also need to link your pages can be trusted. Of course, conversely, if a lot of links to your pages are spam pages, it will also affect the ranking of your page. Here, we are not difficult to think, when our friendship links in the fall of the right link, Baidu gave the "right to drop" treatment. Also, those who mass chain of the seoer, you think of the reason for the punishment? In fact, when a Web page to get the number of the chain is not soaring, the likelihood of being punished is very small. But as long as the release of a part of the right to drop the link on the page, it is likely to be the search engine down the right. This penalty is based on the TR algorithm.

The old cow through the search engine link principle of the history, detailed introduction of the quality of the link to judge. Can you now accurately judge a high-quality link?

Original: "From the link history, teach you how to judge the quality of the chain?" http://www.seoniuren.com/thread-13303-1-1.html!