First, keyword density keyword density is a percentage of the number of words that appear in the article. Early hours, the first search engine to find the number of words in the article that appeared higher, article page with the keyword relevance is greater. Find the words back at the results of search rankings, then this article will also get a better page ranking. Such a ranking algorithm will soon be many webmasters use, there are many irrelevant keywords in the article, and "deceive" the keyword rankings. So, black hat search engine optimization keyword stuffing was born, in general the early concept of "word frequency" and did not think the length of the article, and now the keyword "density" concept paper on the length of term frequency after thinking Concept performance. The current popularity of the Internet is now saying is the keyword in the article appear 3-8, page keywords short article appeared three times on it. Little longer article that appeared best general keywords 5-8 times on it. Do not go heap keywords. As long as the normal writing articles, the article presents the key words should be natural, not intentionally seek keyword density, the written text but will be more tired. Second, the article head to tail keyword article originally appeared content engine spiders to find the first reading, so that the site is relatively TACT CONSTRUCTION RATES Bureau weights slightly higher. Within the body of the money 50-100 words must appear keywords, in particular, to be used as the initial keyword, so that we can optimize the useful articles associated with sex. Under normal circumstances, even deliberately keyword article was originally presented guidelines also holds naturally occurring. In addition, it is possible for the vast majority of the traditional reasons for the end of the article will be in the local paper to summarize the whole, the article also recognized the principle of key words associated with a progressive degree approach the end of the article presents. Third, the words change the way words are not all keywords should appear in a manner that appears above guidelines keyword appears there is a sentence usually more smooth and choose other way when a keyword optimized articles together to share good resources. Writing articles when you can properly integrate into the words, the general words to change the way include synonyms, synonyms, word pairs are not the same thing as saying so on. In addition, the same form of words is not the same performance-lingual search engine to identify whether the chant, still no firm based on. But the form of the alphabet appears keywords, Baidu seems to still be able to view another. Fourth, this method is suitable for splitting keyword keyword group, can also be regarded as a keyword situation changed. For example, the key words "optimization article", in addition to appear this way, you can also split the "Optimizing an article," The ways. Of course, when words appear to have split ways possible guarantee is split proximity key word, as far as possible be split heartfelt words from the letters abatement. Five words like non-demolition demolition www.xinsiwei.net.cn This situation is more puzzling that usually do not encounter this situation too. Still based on "Optimizing the article," for example, keywords can appear in such a way: "write articles when optimizing a key word." Summary: We wrote the article, as long as there is a clear idea in mind, then the appropriate key words into the inside just fine. Allowing users to feel at the time of this article smooth, rather than words written article. General layout clearer article will initially start the article, the article summarizes the end do keyword will naturally appear in the article in the first place locally. And if not deliberate on certain keywords appear in the article is not the same as the shape of the words is normal. So when writing rules must comply with the search engines, do not deliberately go to heap keywords. Instead, this reduces the readability of the article.