the use of nofollow tag and external links

Reader "sleep" in Google's data centers where they left a comment on this post,

    ZAC explain in my reply to your post inside to see that in reply to your blog where you can post a link signature count of external links, just carefully looked at your code
    a xhref = 'http://www.cnteapages.com/' rel = 'external nofollow'
    In this way, simply can not be considered external links, and this way, so is not very kind-hearted ah! ZAC out hope that an explanation!

To explain this issue is not a clear two can say, but to talk about the nofollow tag attributes may also be helpful to many owners, so we write a separate post to answer this question.

nofollow is more than a year ago (as if) from Google led the newly created one label, the purpose is to minimize the spam link on the search engine impact.



Matt Cutts said that the meaning of this label is to tell search engines that link is not through the author's own editor, so the link is not a vote of confidence. Search engines see this tag may be reduced or completely abolished the link to vote weights.

This label is usually used in the blog comments or forum posts, because these places are where most spam links appear. Now mainstream blog and forum software automatically links in the comments and posts added to this tag. "I can not sleep," do not think that this label is my own Canada, or my blog system (WordPress) that I wrote it myself, right?

Another effect is that if you advertise on the site, you can use this tag. Because the original intention of the sale of Web advertising should be a flow, rather than the PR value or attempt to influence search engine rankings. Coupled with this label will not affect traffic, but there is likely to reduce the impact of search engine rankings.

Then added a label on the link to the right to vote is really heavy and PR value of an impact do? This is in doubt. If I remember well, then, Google, Yahoo, MSN support this tag. But they really put the voting weights of these links to zero do? And did not confirm that.

Other search engines do not necessarily support the label, such as Baidu. I have observed the situation, Baidu may not consider this label, because the garbage link Baidu is still very functioning.

Added a link to the label on the external links is not it? Certainly can not say that. Such a link is still the same as external links.

I would like to "sleep" The subtext was that the search engines that have the right to be considered a heavy external link (Let us assume that some search engines will drop to zero the weights of these links), in fact guilty of such thinking and unconscious on a search engine optimization taboo.

In other posts where I have said many times, starting from the user, rather than starting from the search engines. For users, click on this link you'll come to another Web site, did not use a script to do shift, but an html link, it is not external links what is it?

If you really think that search engines will link to the voting rights of those re-zero, then imagine if a site links use nofollow export label, which seems natural? You introduce the reader to some websites, but tells the search engines you do not recommend these sites? Do not suspect? Hurt the other people's websites, or using this label site?

Have mentioned before, afraid of links to other websites is that many owners of a misunderstanding, in fact links to other related websites will help in many cases your own site's ranking.

However, in blog comments and forum posts is not the case inside the link, these links are added the user and the reader, not the site owners or authors added. In many cases, the authors do not see what these links go to web site. Therefore, the quality of these sites of course do not know, and should not be endorsed.

Finally back to the previous comments, plus without the label is not kind-hearted and thick it is nothing to do with. I never say that from my site even out the comments link is very important, and then collect the money so that we add links or to request readers to link back.

The contrary I have repeatedly said, the blog commentary, although the link is an external link (or the help included), but the search engine rankings and the PR value is not useful (not just because of the use of nofollow).

If the reader the emotions of welcome to leave comments, are also welcome to leave signature links. But if you want to leave a link and leave comments, it is not necessary.