Why is it only optimized by Google? The main reason is that the nofollow tag was published by Google a few years ago. It has been observed that it only works for Google so far. This label is used to prevent spam. Its function is to remove the right to vote for links in web pages using this tag.
The usage is to add rel='external nofollow' after the hyperlink, which means that the external link from this will have no effect on Google. The meaning of this tag is to tell search engines that this link was not edited by the author himself, so this link is not a vote of confidence. Search engines seeing this tag may reduce or completely remove the link's voting weight. "
However, this tag can be used to optimize internal pages and assign weight to internal pages of the website. Internal links on web pages also have page voting principles, so NF tags can be used to control the allocation of page tags. For example: As a corporate website, the weight of the product should be adjusted to the highest level. From the perspective of web page navigation alone, the number of internal links obtained by the columns in the navigation should be the same. If you manually use NF tags to adjust the weight of the product page, I believe you can get good results.
Reprinted from www.lvbacn.com