Is the chain in the documents of the library site useful?

We all know that Baidu's own product weight is very high, Baidu search for certain keywords, Baidu products in the column, some proud of the top. These include Baidu Encyclopedia, know, news, library and so on. For example, the current "SLR camera" after Baidu search in the home page results in 5 are Baidu's own products, 10 natural rankings, five in the column. This small series of the protagonist is one of the main part of Baidu is one of the products-Baidu library.

We know that Baidu to JS, flash and frame structure is very cold, then Baidu to their own library content can recognize it? What about the library products of other websites? We use the article "Detailed view of whether the page uses the ALT tag and the correct way to write" in Baidu Library, Sina share and IT168 Library for analysis and comparison. First we look at the HTML code for these three products as follows:

　　

(Baidu Library HTML code)

　　

(Sina love to ask share information)

　　

(IT168 Library)

From the above three products of the page HTML code can be seen in the body part of the SWF file, that is, we often say flash. This content Baidu Search Engine Optimization Guide has very clearly mentioned flash is unfavorable Baidu crawl. Then we have done in this text outside the chain, in the end there is no use? We went on to analyze the pages of this article are taken snapshots of Baidu. So let's take a look at this article in the Baidu Library page snapshot can find the link in the text?

　　

(Baidu snapshot of Baidu Library page)

　　

(Sina likes to ask share information page Baidu snapshot)

　　

(Baidu snapshot of IT168 Library page)

From the above we can find, Sina and IT168 library in the body part, that is, flash content can not be Baidu crawl, the outside of the chain naturally ineffective. And Baidu is different, can see is Flah body part, when we right-click the snapshot of the source code, you can also find the text and the link, then this outside the chain is bound to be useful to the site. As shown in figure:

　　

Therefore, if there is a webmaster in the non-Baidu library site upload contains linked documents to increase the site outside the chain, you can stop doing no work.

This article by Changsha SEO webmaster Long Jun Original editor, joint voting software http://www.toupiaow.com jointly released, reproduced please indicate the source, the niche is not very grateful, thank you!