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Strong outside the chain can improve the weight of the site, which is directly reflected in Google PR value. Who does not want their chain strong, then do a good reverse link.
Many people do reverse link, but do to do, the effect is not the same, but the way you do the link is a little different, reverse link not only to consider the number, but also to consider the quality of the reverse link. Here to introduce the reverse link 9 point canon.
Not included in the site is best not to exchange
Site Exchange links before the need to carefully look at each other's site and build station history, if the site is not included, generally is not the new station is k over, and be punished by the website exchange, if you like it, I can not stop you.
Links to pay attention to the relevance of the site
In the last PR update in 2008, Google made some adjustments to the PR algorithm and increased the evaluation of the reverse link correlation. Two content-related sites do a reverse link, is equal to the weight of the site added, if it is not related to the site did vote, will also mention the reaction. In this PR update found, my www.hlj120.com.cn PR from 4 to 5, and another site PR value from 3 to 2. Analysis of the reasons, the rise of the site's reverse links do a good job, and are related to the site, and the other site backlinks links are good, is not very relevant.
Keywords to use reverse links reasonably
In the reverse chain, you should try to edit your site's keywords in the anchor text, if it is a picture link, try to write the keywords in the alt attribute.
The number of backlinks should grow at a uniform rate
The quantity of the chain increases steadily, guaranteeing a steady increase. If the proportion of the reverse chain is seriously unbalanced, it is bound to attract the attention of search engines, there will be the risk of being punished.
Do not exchange with frame links, js links, and hidden links
Exchange links, do not blindly see the page has a link on the thought is a reasonable exchange, pay attention to check the form of the link is valid. In the search engine for a single page of the judgment, not for the IFRAME within the framework of the link to do effective content processing, but also does not calculate the link in the JS of the vote score. As for hidden links, such as using div to hide the link layer or the use of CSS to plan out the hidden layer, although the search engine can see these links, but this technique is a kind of cheating, once by K endless.
Look at the page indexing problem
If the other site uses link pages to exchange links with you, you need to pay attention to the index of the page, check the page source code and Robots.txt files, in order to prevent the setting of the noindex or in the robots.txt file for the page to prohibit crawling, so the link vote is meaningless.
To pay attention to the number of links
The page points out that the link will be low voting scores, will also reduce the weight of the page itself, and such a page Exchange connection, get the effective score is too low.
One-way links are the best backlinks
Cooperation in the site if it is not free to your site pointed out the chain. Depending on the situation, you can get a higher score than the exchange link. Search engine for such a single vote will be the default voting behavior, the score will be increased, however, the search engine also expressly prohibit the purchase of the chain, if the search engine to determine the sale of links to the site, the K will be inevitable, everything or have a degree.
Never join a link factory
Instead of joining a previously linked factory like the Tai Chi chain, search engines have no good impression of this kind of junk-link factory.
Do the reverse link, but also pay more attention to each other's website dynamics, Dan has problems need to be resolved early, early analysis of the seriousness of the problem, when necessary, timely contact to avoid risk.