to obtain what is good ranking? The premise is this article to be included, if not included, everything is in vain. Then this article will highlight the theme, such as the subject of this article is "how much" construction sites in Shenzhen, to repeated costs and prices of these related words in this article, the user not only to find this article to highlight the theme of what is, and let the search engine easy to understand this article theme. When the trigger "website price" search, search engine will think this article correlation is higher, so the ranking is relatively good. Keywords blend degree is higher, then the value is high, this article has to click continue to reprint. There is strong correlation value, the theme to the good rankings are difficult.