The "nofollow" tag is a tag proposed by Google, Yahoo, and Microsoft in the past few years. After the tag is added to the link, it will not be calculated. The search engine supports the nofollow attribute, to a large extent, it can suppress spam messages from blogs or forums. It is a good thing for the webmaster. Below Lu Songsong sorted out some frequently asked questions about nofollow.
This label is usually used in blog comments or forum posts, because these are the most spam links. By default, the Z-blog system comes with the nofollow tag.
There are two ways to add a nofollow tag to a website:
| The code is as follows: |
Copy code |
|
<Meta name = "robots" content = "nofollow"/>
|
This code tells the search engine that the entire page should not be tracked and the code should be placed between the codes.
| The code is as follows: |
Copy code |
|
<A href = "http://lusongsong.com/" rel = "nofollow"> here is the anchor text </a>
|
This code adds rel = "nofollow" to the hyperlink and tells the search engine not to trace the connection.
Rel = "nofollow" is generally used in links unrelated to websites.
Nofollow generally uses message and comment areas in blogs and forums. We can also add it to pages that are not updated frequently with a slight extension, such as advertisement instructions and website introduction pages. Note, adding rel = "nofollow" is generally a page that is not updated by the website and is added to links unrelated to the website.
Is Nofollow in the link counted as an external link?
The following is a reference to Google's original saying:
Google generally does not track these websites, that is, Google does not send PageRank or positioning text through these links. In essence, using nofollow will prevent us from capturing the webpage that the target link points. However, if other websites do not use nofollow to link to these target webpages, or the URLs of these webpages are included in the site map submitted to Google, these webpages may still appear in the index. Note that the nofollow processing method may be slightly different for other search engines.
Google emphasizes that PR will not be passed, but PR does not represent rankings. ZAC also said: for users, click this link and you will come to another website, no script is used for redirection. It is just an html link. What is this not an external link?
How to use nofollow in the navigation
Many people have demonstrated through experiments that it is most important for a spider to capture the first link and the anchor text of the first link. However, the first link of many sites is the word "homepage, you cannot add keywords. We can use CSS to control them. For example, the code in the "low-key and gorgeous" template.
| The code is as follows: |
Copy code |
|
<Div id = "logo">
|
This is through CSS control, making its LOGO image the first link, and also specifying the anchor text and description. In this way, the "homepage" is the first link, but it is not the first link in the code.
The exported link has nothing to do with PR.
Many websites use the nofollow tag for links, that is, the link is like gold. Many webmasters are afraid that the link to other websites will cause webpage-level PR loss. Theoretically, the exported link does not affect the prvalue of the webpage. The prvalue of any given URL is determined by the number of reverse links and the prvalue cast, and is irrelevant to the exported link.
Does the robots.txt and nofollow meta tags conflict with each other at the same time?
Both robots.txtand nofollowcan disable the engine page capture function. If you use the robots.txt file and the robots metatag at the same time, if the robots.txt and meta tags conflict, googlebot will use more restrictive rules. Specifically:
If you disable a page in robots.txt, Googlebot will never index that page or read any identifier of that page.
If you allow it in robot.txt but use meta tags to restrict it on the page, Googlebots will access that page and read the tags but will not index it.
Baidu and Google's attitude towards nofollow
Google's nofollow: The latest google search engine optimization beginner's guide clearly states that if you set the "rel" attribute of a link to "nofollow ", this means that you are sending the following message to Google: You do not want Google to continue tracking and capturing the pages pointed to by these specific links, in addition, you do not want to pass the reputation of your webpage to the webpage that these links point. (That is, the nofollow link that is unknown does not pass the corresponding weight)
Baidu does not track links on webpage-level nofollow, and does not transmit weights and anchor text. Link-level nofollow tracks links and records the anchor text, but does not transmit weights.
Baidu is not very strict with nofollow
Baidu has finally supported nofollow, but it seems that it is not very strict. Some bloggers once conducted an experiment and added the rel = "external nofollow" attribute B Link to website, baidu is still indexed in the anti-chain of website B.
It can be seen that Baidu's claim that it has supported nofollow is not as powerful as the rumor, at least some exceptions can be found at present.
