How to judge the quality of friendship links is good and bad

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Do SEO has a period of time, often patronize A5, but also a lot of high man hair of the article, today I do in peacetime when the link to pay attention to some of the points written to share with you. Source of links to find a lot of friends have been sharing, here I do not wordy, directly into the subject, how to judge the quality of friendship links good and bad?

1, through Baidu domain: the other domain name, if not the first, such a site has been down right.

This is the first thing I need to look for when I swap friends ' chains. If the other side of the relevant domain is not the first, no longer need to look at the other, the reason is probably analyzed: since check the relevant domain, then the first appeared should be the weight of the high in the first, of course, the first page of the other link is the number one.

2, Baidu snapshot time

This is the second element of my Exchange link. Why I put it in the second position, because there are many sites although the snapshot is the next day snapshot and the day of the date of the collection, but such a station in the domain query through the first page is not in the first, if you do not believe that you can check each other's keywords, The related fields are not in the top 99% of the first page. This is the conclusion I have come to practice myself. You can go to verify the eye.

3, included quantity

In front of the two elements are satisfied with the premise, of course, is to find more than the same as their own station included in the site to Exchange. This is very clear, I will not say more here.

4, the other friends chain number

There is no clear explanation for this, after all, many of us are doing Baidu SEO, on the page of the basic PR can not be concerned about, as for the other station links how many seem to seem less concerned, but there must be a bottom line, if a station link number 200 to 300, you would like to exchange with him? The result, I think, is yes.

5, other search engine's collection number

Some sites, although the number of Baidu included, but other search engine included very not ideal, how Google, Yahoo and so on, if the difference is too big, suggest not to exchange with him.

6, PR value

This condition used to be the Ace of Friendship Link exchange, but Google's departure, PR stop update, I also gradually overlooked this PR factor, PR to my impression is a good-looking just, no use.

This article A5 first, reprint please keep http://www.411-hospital.com link, thank you. The first time in A5 write articles, write well, please forgive me.