The application of nofollow tags in SEO

nofollow tags in some SEO articles are mentioned in the number of times and not like the original article updates and anchor text, such as these related topics, but nofollow label there are many times, in the SEO is still necessary to apply. Nofollow tags, you can understand the popular point: is the hyperlink with this tag, is to tell the search engine, do not need to crawl and track this link.

Our site will often have some necessary presence, but there is no need to expect to have a ranked page. For example: Contact us, online consultation and so on this kind of page, this kind of page is for the user needs to design, but we often did not think that needs to carry on this kind of page the SEO to obtain the rank, this meaningless. In that case, why do you have to let spiders repeatedly crawl such pages wasting time?

We know that every time a spider comes to our site, not every time we have to crawl all of our pages are crawling again, but also have time, for a while, crawl a part of the page, he went again, and then is the next time. Because of this, the Nofollow label is necessary, we put those who do not need to be included and have ranked the page, with nofollow to avoid the spider's frequent crawl, and these more opportunities to leave other important pages, so that spiders in each come after, in a limited time, a lot of crawling.

Here need special emphasis is: the use of nofollow label for small sites is not so important, after all, small Web site article data is not much, even if you do not have to nofollow, spiders crawl efficiency and so on are not much impact, but for the large scale of the site, is particularly important. Because the large web site is often to solve thousands of articles included in the problem, if you can use good nofollow, often let the collection has a good upgrade.

I think about nofollow, the key is reflected in the increase in spider crawling efficiency of the role. Of course, some other uses are also some, such as the weight of the prohibition of transmission, etc., this is fully used to some of the spam message. About this topic, in the Baidu support Nofollow label It is also mentioned in the article.

This article by the Http://www.jf269.com Stationmaster publishes, reprint please specify.