The difference and function between inner chain and outside chain of website optimization

Within the chain: As the name implies is in the same http://www.aliyun.com/zixun/aggregation/8246.html "> site under the domain name of the link between the content page (the content of their own site linked to the internal page of their own site, Also known as the site link). Reasonable site inside the empty link construction, can enhance the search engine's collection and the website weight.   Relative to external links, internal links are also important. Chain: Refers to the links from other websites to their own websites. Importing links is a very important process for Web site optimization. The quality of the import link directly determines the weight of our site in the search engine. Once, I was in the same industry when the lecture of the elder jokes, telling the inside and outside the chain of courses, the number is many, visible, most of the time, seoer for this piece of enthusiasm. The role of the chain within the site: 1, improve the weight of the site from the beginning of the 2012, after the big update, we can find that Baidu's collection of the standards of the article has improved, with the search engine algorithm upgrade, keyword difficulty and the density of the chain to match the good, to help the weight of the site to improve, leading to the site   The inner chain can weave the whole website into a net, guide the spider to crawl, increase the depth and frequency of the spider crawl, speed up the webpage update.   2, enhance the Web site browsing volume of the Web site is the money Ah, good content to seize the customer's eyeball, the chain can improve the user's experience, increase the number of visits, PV, when the PV value is high, then prove that the site is more popular with users. 3, the PR transmission internal link can average station authority degree.   Some columns of the site are very high weight, some columns are not even indexed by search engines, so we can improve the weight of the whole station, it can be very effective to drive the page of our site's ranking, so more to optimize some long tail keyword, so that our site's traffic has a very big upgrade. Outside the chain role: The chain is for spiders to provide a lot of information, guidance and attract spiders crawling crawl path. Outside the chain is an effective way to promote the site, you can enhance the PR value of the site, can improve the impact of the site, but also to bring a certain amount of traffic, the most important, is through a large number of high-quality outside the chain, improve the site keyword in the search engine rankings.