Nofollow Labeling and its application

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Whether you are doing the website of the chain building or exchange links, you will inevitably encounter a problem, that is the nofollow tag, nofollow literal meaning is not tracking, is an HTML tag value, the purpose is to tell search engine spider not to track a particular link on the page.

Let's take a look at an example of how the nofollow tag is written, taking my blog as an example:

A normal a label is as follows:

<a href= "http://www.xxx.com" >xxx</a>

Now I add the nofollow tag, as follows:

<a href= "http://www.xxx.com" rel= "nofollow" >xxx</a>

This is a good way to tell spiders not to track this link. When you do not want to lose weight to an external link, but also have to appear in the content of the link, then you can use this way to screen out.

Next to share with you the nofollow true colors:

1, nofollow label limit spider crawling Link, and is added Nofollow label outside the chain has no right to transfer role.

In order to avoid being weighted by external links on the page, some websites then to appear on the page of the external links on the nofollow settings, then such links have no weight transfer effect, if there is no link bait role (such as search and ask), then should be decisive to stop the release of the chain outside, Let Web site management to play stand-alone, such as NetEase blog, entrepreneurial bar space.

2, nofollow label is the exchange of links must be one of the factors.

We all know that the link is not in order to get the site from the other side of the click on the traffic, but in order to improve the weight of the site, some webmaster will be in the link part of the nofollow tag, resulting in the Friendship link lost its original meaning, this behavior is a deceptive behavior, Of course, some webmaster in and you exchange links when there is no nofollow label, wait for a period of time secretly plus nofollow tag, to avoid this situation requires you to change the links with their own site for a good check over the past, In this case you must be decisive and immediately remove the link.

3, nofollow label only to prevent the weight of output, and can not avoid weight loss, but can guide the spider crawling.

For example, when you have 5 external links on the page, then each external link to get a weight of 1/5, and you add a nofollow tag in one of the external links, so that spiders do not crawl this link, then the remaining 4 external links to get the same weight or 1 5, the weight of the page will be divided into these 5 links, only one of the links that have been set up nofollow tag is lost without formation of transmission, which seems to be a "harmful to the ego" behavior, but also has the benefit, so can guide the spider crawling, so that there is limited bandwidth of the spider in the time, Crawl to more pages.

4, Nofollow and External Nofollow

In a literal sense, nofollow is "do not track", and extenal nofollow is "external do not track", perhaps you have already seen, they are both the same meaning, external nofollow Just nofollow more normative writing, do not tangle, they are a meaning!

Nofollow tags can also be used in many places, such as WordPress article comments section of the application, as well as for the user experience to introduce some of the use of external links and so on. Nofollow is a double-edged sword that takes some time to ponder. This article by the SEO Learning Network webmaster Zhang Donglong Original, the original address http://www.zhangdonglong.com/archives/615 reproduced please specify, thank you.