Example talking about five kinds of common outside chain without SEO effect

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

As a novice, many people may have just begun to have this feeling, every day to the site hair outside the chain and find links, but to our site to bring the effect is very small, site optimization for a period of time, but the ranking of traffic is still in situ walk. This author has sorted out a few of our common invalid outside the chain, hope for everyone's outside the chain of construction help.

Hyperlink contains JS code

We all know that so far the search engine for JS index is not very good, although Google has publicly admitted that it can be very good index JS code, but as most people do Baidu optimization, we should still maintain the original view, some people may not be very clear what is a hyperlink contains JS code, We can look at the following pictures:

The diagram above is obvious and we can see that the link is nested in the JS code, and when we move the mouse pointer over the hyperlink, we can see the browser status bar is not an address, but a JS code. We can determine this hyperlink for our SEO does not have any effect, at most we can say that this is just a link to increase the site Puguang rate. We don't have to waste much time on this kind of chain.

Second, use the jump link.

I think there must be a lot of optimization staff have done in search and ask the outside chain, I have in the pig to a chain of a dollar outside the price of people to do outside the chain, just started very happy, in the Baidu domain of these outside the chain, found that have been included, and even some of the seconds received. But behind the author is not up, the author found that the search on the outside of the chain is used to jump the chain, and do not know search to ask, in fact, many forums or sites in order to prevent the spread of the chain, the external chain using the means of jumping. The author below will search for the outside chain as an example, as shown in the following figure.

In the page source code above, we can find the URL after the href search to ask the URL address, click to jump to the link site. Also we put the mouse arrow on this link, the browser in the bottom left corner of the status bar on the address to see let the person egg pain. This kind of outside chain for our site optimization effect is almost not.

Third, the link contains nofollow tags

Initially Google launched the nofollow tag is mainly to reduce the index of garbage content, did not expect this is also a lot of sites to use, its main function is to tell the search engine "do not crawl the link on this page" or "do not index this particular link." Speculation to cancel the webmaster will this label used in our friendship links, resulting in we can not get a fair weight transmission, we in the friend chain should conduct a comprehensive review.

Iv. Friendship chain Use frame framework

Frame frame and JS code like the search engine are not very friendly, generally we are the framework for the site of the advertising module, but some webmaster to this module for friendship links, so that our site can not get the weight of the transmission, this with the use of the Nofollow review, Webmaster Friend in the exchange of friends when the chain also to audit whether the other site in the friend chain use frame frame.

V. robots.txt Spider file screen

The main function of the spider file is to prevent the search engine from the index of some sensitive or spam files or pages in our site. The outer chain in the pages below these directories will be invalid. We are in a site to do outside the chain when we can first open the site of the robots file, to see if the relevant page for the spider screen.

From the image above we can see that this forum's robot file organizes the spiders that we do on the outside of the chain to crawl, which means that the outer chain we do on this page is not valid.

The above is the author of the five is almost no effect on our SEO outside the chain, hope for everyone's outside the chain of construction help. The implementation of the chain construction is not enough more important is to analyze, will not let our efforts become useless. This article by the http://www.yantom.com/of the United States Keiko, reprint edit, reproduced please retain the source.