Lao Xu teaches you the nofollow label of SEO

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; If it is often to do Google's friends on the nofollow label must be very familiar with, this label is the earliest Google new creation, the purpose is to minimize the impact of spam links to search engine rankings, this tag is to tell the search engine this link is not the author plus, is malicious add, So the search engine will not be the link to compute the algorithm directly ignored.

In fact, this label for some sites is not used, because there is no interaction with visitors. But it is very necessary to apply this label to websites that interact with visitors, such as blogs, forums, and message sheets. It was initially because of the popularity of the blog, a large number of spam links and spam comments have prompted Google to launch the label. Google's introduction of this label effectively blocked the impact of spam and spam comments on a site's ranking in search engine results.

So some blog sites can rest easy, even if there are spam comments and spam links will not be reduced to the right. And some blog system like WordPress These, has been added to the system nofollow tag mechanism, in the comments will be added, and some people will misunderstand that the blogger is not kind, even leave a link will not. In fact, the system to add their own or perhaps. But so far Google, Yahoo, MSN has expressed recognition of this label, but the domestic Baidu is not necessarily, this is why a lot of hacker SEO is still using blog comments mass, spam link Group of reasons, because nofollow this label for Baidu does not work at all.

However, most of the Chinese web site traffic from Baidu, that is, in the Chinese web site is not useful, in addition to foreign trade-type sites. Some for Google optimization webmaster in order to make their own site weights do not lose the nofollow tag to their own friendship link to shield, this way you can get the weight of his site and he went to get the weight of your site, Google saw this tag directly to the weight of these links canceled.

So everyone in the friendship link when you must use webmaster tools to see a good link again. And some of the knowledge of SEO do not understand friends do not think with this tag added on the friendship can let Baidu to remove the weight of the link, Baidu is not recognized this label. If you sell ads on the site can use this tag will not affect traffic, but also reduce the advertising code on the search engine rankings of the impact of the site.

That's all I have to show you. Nofollow label usage For example you want to block the link is <a href= "http://www.hbxintai.org/" > Reducer </a> after adding this label is <a href= "http://www.hbxintai.org/" rel= "nofollow" > Reducer </a>. Nofollow tags for the weight of the site allocation is also very useful, for example, about us, privacy protection, company profile, site background links can be added nofollow tags can be PR value does not pass to these pages. These pages do not have much use for PR values. can prevent weight loss.

Source: Hebei old Xu Seo training
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