2, to attack competitors website.
search engine ranking, the chain is only one of the factors. Because the standard is unified. So when the search engine only rely on this point to judge a website is not scientific. Shanghai Longfeng know the practice of the chain such that some search engines, this time from the chain this element is difficult to distinguish which website.
search engine to find the information users is the key. In a lot of using search engines to find information, as long as the website allows users to experience the best of Shanghai dragon optimization ranking in front, will otherwise lose users, users get search engine will not play anymore. But the user experience good site outside the chain is not necessarily the best, assume that a user experience the best website, because competitors mass waste outside the chain, and be search engine punishment, in the search engine to find time to this site, serious damage the website of the corresponding user, if such a situation throughout the show, then the search engine will not play anymore.