The link structure of 2, unreasonable
are two arms and two legs, a head and a mouth, two ears, two eyes and the structure of the human body, the fact that the site is the same, the first page list page (channel page, column page) – page form. The site also includes some other pages such as topic page, search page, page labels etc.. Both of these pages is the site, to form a complete structure of the human body. However, these single page how between interrelated, this is "a hub – link. Like the blood vessels of human body, the body parts are connected. If the part of the vascular problems, will cause harm, there are light bleeding, even lead to death. The site is the same, if not reasonable collocation website internal links to web site, will lead to serious obstacles in the spider crawling process, can’t even find some web pages of these minor status. If the site links too much, it will cause serious problems, search engine to remove dead links database, this is an important reason for the decline in site index.