Comments on the impact of mirror sites

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The author recently in the optimization of a website, but the company itself for the site set up a mirror site, the site procedures, content exactly the same, the purpose of what I do not understand. has been suggested that the mirror site to do 301 jump to the main site, but it just refused to (the main reason is that the mirror site has more than 2000 IP is not willing to do so close to do jump). Helpless under can only continue to do my optimization task. As for these two sites is what, do not send a link, lest be considered to send advertisement. Want to analyze the friend can Baidu (Rom home and brush machine Home These two keywords, ranking are in second place). Here's a question I've had for the next one months.

Analysis of the operation of the two stations

The main station a uses the relative address, so that the mirror station B makes the data mirror. And we are basically the main station hair outside the chain, mirror station hair early issued a small part of the outside chain. The difference between two sites is the difference on the outside chain, now two sites are: The main station a Baidu weight 3,PR2, the daily IP roughly 8000 or so. Mirror station b Baidu weight 1,pr0, the daily IP roughly 2000.

Second, analysis of the two-station keyword performance and search engine treatment

First, the main station published almost 1 minutes in the article can be included, and mirror site is not sure when will be included. But overall, the main station contains more than 50,000 pages, mirror site also has more than 10,000 pages. and keyword ranking is, the main site is the main keyword and article page keyword ranking better. And the mirror station is the list page ranking better. Relatively, the mirror site ranked better keyword list page in the main station corresponding keyword List page ranking is poor or the corresponding pages of other less relevant pages.

Iii. Proof of the case

To give a practical example, such as ZTE N880E Brush machine Package This keyword I do enough for this keyword outside the chain, such as Baidu Bar, this interaction is very high links and so on, but the result is 100. And the mirror site does not do outside the chain of circumstances, ranking is the eighth place. There are many such examples, this may be the mirror site of one of the hazards.

Iv. Potential Hazards

Some people say that do mirror site also has its advantages, a page can be included many times, in the main station can not visit the mirror site, can also be the main station diversion. Yes, these are the methods that have been adopted long ago, but this method is outdated. Now mirror site as long as Baidu will be given to reduce the right to deal with the main station is not affected, I think more or less will be affected. And if Baidu is the mirror site as the main site, the damage will be immeasurable. So we should not do the mirror site, of course, there are ways to prevent others mirror their own site.

In short, the role of the mirror site, the author of the page to do the keyword ranking is suffered injury, a little bit of wear confidence, I hope that friends with similar experience can give the author a message to communicate.