Of GoogleCenter centerThere is a help about Rel= “nofollow” label inside, everybody can consult.

Google took the lead in introducing a standard that prevents rubbish link 2005, the Nofollow attribute that begins to support pair of links (Rel=’nofollow’) . This is at that time SEO (search engine is optimized) the bound argues the heat news event of rise from all directions. After all the value that Nofollow attribute shucked to link, and the link is tremendous to the influence of Seo.

One, the definition of Nofollow label:

Original, nofollow attribute appears in webpage class yuan in mark, demonstrative search engine is not tracked (namely capture) all extroversion link on this webpage. For example: <meta Name= "robots" Content= "nofollow" /> . This statement generalNofollowAll links of this webpage.

Later, google offers property of this one label alone, add on independent link, for example: </a> of academy of <a Href=http://www.dugutianjiao.com Rel= "nofollow" >SEO, the link that expresses to tell a search engine does not track this webpage to go up or do not track this (SEO academy) specific link. Google won’t track the link that takes Nofollow, these link medium PageRank or fixed position character won’t be conveyed by Google.

2, Nofollow label whether really useful?

100 divisions are opposite Vicki now all exterior links increased Nofollow property, the matter that such doing is to defy rubbish is linked, resemble those black hat Seo. Alter already become effective.

Use Nofollow label correctly to all alone to screen search engine rubbish dispatcher has very big effect. A link should be added only Nofollow attribute, operate anyhow, won’t be gifted by the search engine such as Google taller weight. The link that used Nofollow label does not calculate true exterior link on firm sense, at least is effective, effective on SEO exterior link. Of course, it searchs engine in the light of what bear this one label only and character. Google, yahoo, MSN expresses to bear this label, baidu does not bear this one label at present.

Chinese searchs the market to exceed the world that the half is Baidu, want Baidu not to support this link attribute only, nofollow cannot true popularity rises. It is very effective that rubbish link is returned in Baidu, the person that accordingly rubbish leaves a message won’t stay a hand because of Nofollow absolutely.

Nevertheless, those who need an attention is, the link Baidu of Nofollow still can climb, because of although this was added the link of this one label, still conducing to those who raise Baidu collecting is a rank even. And even if in the light of Google character, set Nofollow label, google or meeting index section link content.

Basis alone the observation of Gu day arrogant, increased Nofollow property, the meeting with whether true Google will counterpoise replacement 0 still remain deliberate. I think, the link that increased this one property should also won’t be considered as mistrustful, its action should be pair of websites advocate, designation should be linked not matter. For instance a recreation kind rich guest linked SEO academy, this one link added Nofollow label, google should be met understand its, to guest of this recreation rich, because the theme is abhorrent,SEO academy is linked this, not matter.

3, label of use Nofollow of the need below what circumstance and the function that use this one label?

1, rubbish link can consider to use Nofollow label. For instance the user inside order of customer of a few rich is commented on or leave a message information, and the links link of this kind of most rubbish to appear place inside card of a few forum. Through Nofollow this kind is linked, the website that also can prevent oneself effectively is punished by embroil. Cite a case, writing an article when you and must cite when website of a certain rubbish, for instance you are preparing to expose website of a rubbish, apparent you won’t be willing to deliver the weight of own website it, this moment use Nofollow is again appropriate also did not pass.

2, link paying fee or advertisement content kind the link can consider to use Nofollow label. The website rank in Google search result depends on partly the analysis of pair of other websites that link this website. Affect search result to prevent to pay cost the link and produce adverse effect to the user, administrator of Google proposal website uses Nofollow on this kind of link.

3, the link of less important level can use Nofollow label to grant balanced the link weight of complete station is delivered. That is to say, the in-house link of a website also can use Nofollow label, in order to achieve weight of control interior link and PR flow and the goal that distributing. For instance a few connection us, privacy policy, copyright declares wait for a link, flow arrives the weight of these webpages often is wasteful.