The influence of nofollow label test on search engine rankings

Initially, the nofollow attribute appears in the page-level meta tag meta, indicating that the search engine does not track (that is, crawl) all external links on the page. For example:

Before nofollow is used for specific links, it takes a lot of work to prevent a rover from tracking specific links on a Web page (for example, redirecting the link to a URL that is blocked in robots.txt). And that's why we created the Nofollow property value for the Rel property. This gives webmasters more granular control: No need to tell search engines and bots not to track all the links on a Web page, simply to instruct the rover not to crawl a particular link.

Nofollow is a new label attribute that was led by Google more than a year ago to minimize the impact of junk links on search engines.

Matt Cutts said the meaning of this label is to tell the search engine that the link is not edited by the author, so this link is not a trust ticket. The search engine sees this tag and may reduce or completely cancel the voting weight of the link.

This tag is usually used in blog comments or forum posts, because these are the places where the most junk links appear. Now the mainstream blog and forum software has automatically added this tag to the comments and posts link.

Another effect is that if you sell ads on the website, you can use this tag. Because the original intention of buying and selling web ads should be traffic, not PR value or try to influence search engine rankings. Adding this tag does not affect traffic at all, but it may reduce the impact on search engine rankings.

For example:

Beijing Seogoogle How to deal with the links that are not tracked?

Google does not track such links. That is, Google does not transfer PageRank or positioning text in these links. In essence, using nofollow will allow Google to discard these target links from the entire network. However, if other sites do not use the nofollow link to these target pages, or the destination Web site is submitted via SITEMAP to Google, these pages may still appear in our index.

In addition, it is worth noting that other search engines may have a slightly different approach to nofollow. Baidu does not support nofollow tags.

What are the policies and specific examples that Google uses for nofollow?

Here are some things you might consider using nofollow:

Untrustworthy content: If you cannot or do not want to provide security for the content of the Web pages you link to, for example, untrusted user comments or guest book entries, you should not follow these links. This prevents spammers from locating your site and helps prevent your site from accidentally sending PageRank to "bad neighborhoods" on your network. In particular, if spammers find that untrusted links are not tracked in the service, they may decide not to locate the appropriate Content management system or blog service. If you want to accept and reward trusted content senders, you can automatically or manually delete the nofollow attribute on a link that has always provided high-quality content to members or users.

So does adding this tag will reduce the link voting weight and PR pass value to zero? There are some doubts about this. If I remember well, GOOGLE,YAHOO,MSN supports the label. But do they really drop the voting weights of these links to zero? Not sure.

To be sure, nofollow+ Blog comments or forum posts, the voting weights of such links can be ignored.

Other search engines do not necessarily support this label, such as Baidu. As for my observation, Baidu is likely not to consider this label, because the spam link in Baidu still very useful.

In addition to blogs or forums, be careful when using nofollow. Imagine if the export link of a website uses the nofollow tag, does it seem natural? You introduce websites to your readers, but tell search engines that you don't recommend them? Not suspicious? Is it someone else's website or is it a website that uses this label?

Also said before, fear of linking to other sites is a lot of webmaster error, actually linked to other related sites in many times will help your own site rankings.

Paid Links: The site's ranking in Google search results depends on the analysis of other websites linked to the site. To prevent paid links from affecting search results and adversely affecting users, we recommend that site administrators use nofollow on such links. The search engine guide requires that paid links be published in machine-readable fashion, in accordance with the billing relationships that online and offline customers want to publish (for example, full-page newspaper ads may use an "ad" title).

Crawl by priority: Search engine bots cannot log in as members or register your forum, so there is no reason to invite Googlebot to track "Here Registration" or "Login" links. Using nofollow on these links lets Googlebot crawl other pages you want to see in the Google index. However, a fixed information architecture (intuitive navigation, user-friendly URLs for users and search engines, etc.) is likely to be more efficient resource utilization than being crawled by priority with no tracked links.

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