Use of nofollow labels

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Bestroi suggested that the nofollow, so the previous written a turn around.

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.

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.

But the links in blog comments and forum posts are different, and these links are added by users and readers themselves, not by site owners or authors. In many cases, the author will not go to see what sites these links go to. So the quality of these sites is of course not known, and should not endorse.

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