To elaborate on the choice of links

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall

Why so many webmaster busy doing links all day? I believe that we must be directed to the PR, a lot of webmaster do links to do so much fun, oh, so spend 30 minutes to write this post, to some webmaster point advice, of course, I am also a novice, about SEO optimization I do not understand, online such a vast amount of speech, I just want to say some of their own feelings, deficiencies, please include a lot!

To get to the point, first the concept of the link:

External links: External links. External links to this site, generally refers to other sites linked to this site.

Internal links: Internal links. Links between pages within this site.

Reverse/import Links: Backward links or incoming/inbound links. Meaning and "external link" approach, refers to other sites linked to the site.

Export Link: outgoing/outbound links. Refers to links from this site to other sites.

In the impact of the site PR factors, the importance of friendship links is how to emphasize not too much, whether the GG algorithm changed and changed, external links as an important reference value of the algorithm has not changed, compared to some of the optimization, cheating, through high-quality PR external links to obtain the natural factors more popular search engine favorite!

GG and Baidu to see the importance of a Web site, as well as the evaluation of the relevance of a website, a lot depends on how many external connections this site, but please note that not some "garbage" external connection! High-quality always please put in the first, online on this aspect of the posts are uneven, I believe many webmaster friends have read carefully, But really understand its taste is very little, so it caused a lot of webmaster friends, blindly to find links.

And I found that now do the site more and more people, QQ group is everywhere shouting free collection, (I, what is free to include?) I was depressed how they have the nerve to shout the export ... This I have no language, because the URL station PR will be a lot of promotion (so many stations chain to it, the rise can not be fast?), but some of these malicious people, often rely on this way to do bad things-such as site PR elevated, immediately turned into other types of web sites, such people are very shameful, serious bs!

For GG, the link is its "lifeblood", but also the key to its success. So Google has the opportunity to instill in you the idea that you should go out and find a link, or your site won't be accepted. GG has in a search engine academic conference on the inclusion of the minimum standard site, that is, when you submit to Google Web site, at least to ensure that there is an external link.

But note that the degree to which GG attaches to the number of external links on a website does not mean that you can establish a connection with any Web site without any strategy. This is because Google does not simply determine its ranking by calculating the number of external links to the site. In that case, all webmasters will have only one thing left to do-crazy exchange links!

So, is not to say a pr=0 website, with a lot of high-quality, high PR site to do the link, the more do the better?

How many people have noticed this problem? Here, the PR system of GG to assess the importance of a website, a site's external link quality, quantity is an important reference value, this is believed that everyone is aware, but there is an important small parameter x because I do not know what this parameter should be called-. -~ means the number of external links to the station you want to link to, this is 2 yards from the number of connections mentioned above, please do not confuse.

Let me give you an example!

Take my station to say, my station just built one months, so pr=0, now there is a pr=4 site, if my station is its only external link, then GG will believe that my station is its best an external link, the equivalent of it to my site to invest 1PR points, this can significantly improve my PR score, This is particularly remarkable for the new station! (Hey, anybody want to help me with this?)

However, if Pr=4 's website already has dozens of links, even hundreds, this is what kind of situation?—— GG will only think that your station is one of its many links, I can get the PR score on the basic = 0, so that the number of external links to my station more can get the PR score will be lower. Similarly, if with a PR value of only 1 stations do link, but I was its only one external link, then I get the PR value is far greater than that pr=4, external links number of 100 of the site. This is like splitting apples, as to how to divide, I do not know you read it?

The problem now seems to be more and more complex, in fact, I now say that the time is also a mess of the brain, said to go wrong, I try to say clearly, but we have to look carefully.

Let's take a look at the formula for PR score:

PR (A) = (d) + D (pr (t1)/C (T1) + ... + PR (TN)/C (TN))

which PR (a) is from an external link site T1, based on PageRank for the system to your site to increase the PR score; PR (T1) indicates the PR score of the external link site itself; C (T1) indicates the number of external links owned by the external linked site. We should keep in mind: A site is only 0.85 of the site's PR score, and this 0.85 score is evenly distributed to each of its links to the external site.

Imagine my pr=0 site, which is linked to pr=4, external link number = 9, then calculate the formula as follows:

PR (AKA) = (1-0.85) + 0.85* (4/10)

PR (AKA) = 0.15 + 0.85* (0.4)

PR (AKA) = 0.15 + 0.34

PR (AKA) = 0.49

In other words, if my site gets a PR value of 4, external links number 9 of the site's links, and finally my site will get 0.49 PR score.

Let us see if my site is a PR score of 8, the number of external links to 16 of the site links, then I will get the PR score will be:

PR (AKA) = (1-0.85) + 0.85* (8/16)

PR (AKA) = 0.15 + 0.85 (0.5)

PR (AKA) = 0.15 + 0.425

PR (AKA) = 0.575

0.575!o (∩_∩) o ... Haha, if more than a few such links, PR is simply a piece of cake!

For the convenience of everyone to understand, and then roughly the outline:

1, friendship links a lot of time your essence is not expensive, too much of a day by which links to the site to implicate, how to die do not know. A lot of web site, PR January rapid rise, but that day suddenly died is this reason.

2, in doing external links, the PR value is high of course good, but must see how many external links it has number.

3, the best link is the site's peers, and site content has relevance to the site, such a link exchange can be aggregated user groups, other important sites can be considered in addition, GG on the relevance of external links has been looking very heavy.

4, we have more to figure out ...

OK, finally summed up: This article only personal opinion, my personal homepage new January, in Baidu, GG did not have any weight, pr=o, some people say, this is not optimized for the sake of, I think there are those times as well as a good update to maintain their own site more meaningful, some people say that my corn is a bit wild, Khan, you have not heard? The crops are good for others, but the child is good. Only this site for the establishment of the 1-month small memorial, hehe.