high quality outside the chain of some of the people said that from a web page single link is high quality links, some said that the PR chain is the high quality links, is not a. I have nothing to look at aspects of the quality of the chain, of course including several test station, not elaborate, finally draw a conclusion that the high quality of the chain must possess two characteristics, that is stability and long. Which is the most important for a long time, meet the two characteristics, it can be said that he is a high quality link, Links for the website ranking effect is very significant, but this connection is like love, on a good will for a long time, get easily lost, once the withdrawal of link damage or very large the connection can be used as a special link, not the first link category of high quality. Know the characteristics of the high quality of the chain, we will talk about comparison of soft outside the chain of the chain more than the other.
Shanghai is not a dragon can solve the problem of post
1, use the search engine "familiar with" the structure of the content of