How to treat the first-level domain name and the two-level domain name friend chain Exchange

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Many people do not understand what is the first level domain name and level two domain name. In fact, the first level domain name is the top-level domain name is at the beginning of a point, such as. XXX. "First level domain name" is to add a level before "com net org", such as xxx.xxx. "Level two domain name" is in the first level domain name before adding a level, such as XXX.XXX.XXX. Class two domain name is the domain name that is hosted under the main domain name, the weight is lower than the main domain name, the two domain name belongs to an independent branch, he has own collection, the snapshot, the PR value, the reverse chain and so on, certainly, when the main domain name is punished, the two domain name This is also a class two domain name disadvantage. Then a level of domain name and two-level domain name of the station exchange links when we should pay attention to what?

Let's talk about the exchange of links to note:

A, the site's snapshots, PR, keywords ranking, friendship links. Snapshot Update Quick Description search engine spiders crawl more times. And PR just as a reference standard one of the general PR5 the following Web site is not very useful. If the other side of the keyword ranking is very good, the weight is also good, and such a Web site for friends can also play a driving role. The other side of the Friendship link station can also be used as a reference standard.

Second, the quality of the site itself. We can consider the situation of the website from three aspects, the design of the website, the content of the website and the outside chain of the website.

Third, check whether there is cheating behavior. Can be viewed from nofollow, JS calls, and whether there are no search through nofollow files.

Iv. the relevance of the website. The higher the relevance of the chain of the site to Exchange friends chain. More can get the favor of search engines. You can also increase the weight of the site. What is relevance? such as our company on the landscape decoration is about decoration, can find the site of decoration category, or home building materials can also be.

Why two level domain name is inferior to the first level domain name? How should we understand?

A two-level domain name and a first-level domain name of the station each factor is quite the case, from Baidu rankings, the two-level domain name of the station is not this one-level domain name of the station ranking high. This is the search engine to the domain name of a weight. And if we use the various factors are very strong two-level domain name station and a normal level of domain name of the station contrast, the former certainly higher than the latter. From here you can see that the level two domain name is not equal to the level of a domain name high weight. But it is higher than the middle level of the domain name.

So we exchange links, should be considered comprehensively, first of all, according to the exchange of friends in the chain of four points under the site to see whether it is appropriate. In fact, www is also a two-level domain name, if the conditions of a good two domain name can also exchange friends chain, of course, the level two directory do not change.

This article by the http://www.fzdai.cn/decoration release.