The method of judging the quality of the external link

How to judge the high and low quality of the external link: the “outside chain” of the website, which is often mentioned by the general stationmaster, I believe that everyone will listen to the ear again, but it is undeniable that the role of the external chain on the various aspects of the website is also undeniable. Snapshot update frequency by the outside chain, web site keyword out chain, the number of pages included in the web site depends on the outside chain, but I want to say is not what the chain is good for the website, on the contrary, to do low quality external links is not as good as not to do. Then how can we judge the quality of the website’s external chain?
1, from a time perspective, the longer the external links are retained, the higher the quality of external links. Every day, the search engine examines the frequency of the content of each website, the construction of the external links of the website, the long time, the low quality of the external links will be slowly removed. Those external links that retain half a year, one year or even two years are undoubtedly the external links recognized by search engines, which is undoubtedly the external chain of high quality. But this kind of judgement skill is not very easy. This requires the stationmaster to observe and accumulate for a long time.  Through daily observation of the external links snapshots of their websites, the number of external links to determine which are high quality external chains and which are low quality external links.
2, the second skill is mainly from the website itself as the starting point, by observing the snapshot and quantity of its own website to judge the quality of the external links of the website, and the method three is the extension of the two, that is, through the study of the external links of the similar competitive websites. For example, we do “mobile phone purchase” the key words, we can look at the same website, especially those websites with higher weights than their own websites, talk about the external links of their websites through the stationmaster tools, see where they have built the external links, through the contrast of the snapshots, we are easy to do. Determine which of the high quality external links.
3, as we all know, many websites, even if they are just opened, will be highly weighted if they are included in the search engine. This is mainly reflected in the websites of education, medical, industrial and GVM industries. Stationmaster in these industry Web site to do external links, although the degree of relevance does not necessarily conform to the content of the website, but once included, it is absolutely a high quality external link. This kind of website weight is relatively high, the reason is also very simple, because the content of these websites are original, the main reason is that this kind of website is related to the country, of course, it is not our personal stationmaster or other stationmaster can compare. In order to cater for the country’s policies, the website engine will even manually increase the weight.