SEO Novice to learn to beware of chain traps

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

Today this topic is also a cliché, maybe a lot of friends have seen, but still long-winded, say about SEO novice do outside the chain of things. SEO work is a very important part of the chain, a good outside the chain can have a considerable impact on the site, especially a variety of one-way links, which also produced a variety of chain traps. If you enter the chain traps, work white do not say, but also may do for others to marry clothes, their own white do things still fall behind the benefits, others have accounted for a big bargain. Most of the chain traps are using some of the more subtle technical means to tamper with the source code, make the link for your site does not have a substantive role, but the page can see this link, some no technical basis of novice friends will often see a link to feel that this place can do outside the chain, in fact, is not exactly the case ( In the less than the blog to see him for some take this to fool people's so-called Master is also an abhorrence, the following is a simple introduction to the common chain traps.

1, nofollow. This can be considered the most common chain trap, there are two representations, one of which is the meta section of the entire HTML document that declares that the document does not need to crawl the link at all, but it does not use many people because the content on the page is mostly crawled, There are only a few special pages in this way; another way is to declare in the anchor attribute, like <a href= "xxx.html" rel= "nofollow", which means that it is very flexible to not crawl the page that the link points to, Can be in bulk for the specific location of the link to specify, so is also the most commonly used way, common in the blog, 8630.html "> Sometimes some people in the link to do this hand and foot."

2. JavaScript script. This is also a very common outside the chain trap, often found in friendship links. Because the weight of the link is often relatively high, so someone will be in the link part of the cheat, use JavaScript script input, so you can see the link on the Web page, but search spiders do not know JavaScript script, naturally overlooked, This creates a one-way link between your website and your site. The script content is very simple, as long as you see in the Source Code Friendship link part is not the plain anchor text link, but is shaped like <script type= "Text/javascript" src= "Xxx.js" ></script>, Then use the FF or chrome-like browser to click on this JS script link into the future, see document.write (May use more complex form, but to let spiders recognize and can output, with this sentence is enough), the output of your website link words, is to use this kind of trap. There is also a possible use of noscript way to cheat, you can refer to this site before the article.

3. IFrame. The principle of similar to the second, but also the common trap, also because spiders can not identify the contents of the IFRAME, the chain of traps placed in the IFRAME inside, you can see, but spiders do not see. The identification method also above, view the source code in the friend chain part if is the shape like <iframesrc= "xxx.html" ><IFRAME>, with FF or chrome click the link to see the link text of your website, that is to use this trap.

4, UA spider hijacked. This is the most insidious kind of chain trap, in short, the cheat has prepared two different sets of pages, a set is for you to see, a set is to look at the spider, to you see the page has your link, and to the spider to see the page inside did not, because it is through UA to judge, processing logic in the server-side completion, generally difficult to identify , can only rely on Webmaster tools simulation spider crawl. If you do not have the link keyword in the text that is obtained by simulating the spider, or the text of the friend chain part is not appearing, that is to adopt this kind of trap way. In fact, there is another can be designated through the robots.txt, shielding the normal access to the page, forcing the designated spider to visit another without the chain of the page, but this way sometimes not very good, because Baidu Spider seems not so rules, so almost no one to use.

To identify the chain traps, you need to learn to view the source code, or use some of the more complete webmaster tools, or need a little technical basis, so it goes back to the controversial topic: SEO need not be technology. I personally tend to be a little bit more, so you can take a lot less detours.

Opinion, not necessarily accurate, welcome to pat Bricks.

This article from the excellent chain Bar http://bbs.gongluewang.com, welcome reprint, Thank you.