Nofollow enables links in comments and messages to play a real role _ HTML/Xhtml _ webpage Creation

Comments and comments are originally an excellent way for website administrators to establish communities and readers. However, comments and comments are often abused by spammers or other spammers. Many of them use scripts or other software to generate and publish spam comments. This kind of spam messages not only affect the appearance of appearance, but also bring comments and comments to your website in most cases, which is originally an excellent way for website administrators to establish communities and readers. However, comments and comments are often abused by spammers or other spammers. Many of them use scripts or other software to generate and publish spam comments.

This kind of spam messages will not only affect the appearance of appearance, but also bring a negative impact to your website on the downgrading of search engines in most cases! This allows many webmasters to restrict the publishing of URL hyperlinks in comments or messages, but this makes some content that really requires link orientation unrecoverable.

Now, we can use the "nofollow" mark, a few years ago, Google, Yahoo! And MSN and other major search engines have introduced "nofollow", this attribute has been widely used. All links using the rel = "nofollow" attribute are not used to calculate PageRank or determine the relevance between your webpage and user queries.

For example, if the spam comment sender adds a link to your comment:

This is a good website! It will be converted:

This is a good website! When PageRank is calculated, this new link will not be considered.

In this way, you can avoid problems when using PageRank. Although spam comments and comments cannot be avoided, meaningful oriented links can still be released normally!

By default, many blog sites (such as Blogger) automatically add this attribute to all published comments.