Many are doing Google optimization, pay special attention to the PR value of the site, in the Friendship Link, the first consideration is the PR value, in fact, the PR value is only a Google search engine parameters, is not the site PR value higher site ranking is good, and some new stations do not even PR, but the ranking is good, Ranking good or bad important or to see the weight of the site, how to improve the weight of the site webmaster should pay attention to.
The purpose of the search engine is to provide the most accurate quality content to the searcher, which is the most important technical means of the search engine winning in the fierce competition market, so the content optimization in the website optimization is to make the content of its website have value, at least should let the search engine think so. The PR value is an important algorithm in Google rankings, and people who do Google optimization know this. In general, a PR value of 5 of the Web page will be ranked in the PR of the front of 1, of course, this is not absolute. Of course, PR of 1 Web pages may also be ranked in the PR of the front of 5, this is mainly because the PR value is not the only factor in the site rankings, because the number of factors to determine the ranking of the site, the PR value is only one of them, and Google Now more and more reduce the PR value of the ranking effect. A website wants to have the stable high rank, the content is first. Quality content, even if PR for 0 can row to other high PR worthy of the front. So we do SEO services do not deliberately to pursue the PR value.
Many do seo people start is a lot of looking for outside the chain, exchange links, of course, reasonable friendship links to ranking is a certain advantage, but not the PR value higher rank. PR value high not necessarily ranked high, PR value is low not necessarily ranked low, do not deliberately to pursue high PR value, and even if you go deliberately pursuit is not so easy to PR value can be promoted very high.
Of course the PR value is not no effect, after all, Google is also a factor in influencing the ranking