Error reading of SEO key words density

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As for SEO, many friends spend their time on unimportant details, and in the details also produced a lot of misreading, resulting in the phenomenon is unable to correctly distinguish between keyword density and keyword stack between the differences, and finally led to the site into an excessive optimization or is the optimization of cheating vortex, the site down right, by K , or it's not surprising that you can't get a good ranking.

There's a lot of misreading, and here's just the misreading of keyword density. First of all, there is an unwritten rule in the optimization world, that is, when the website is optimized or the website is finished, use the keyword Density query tool to query the density of the keywords. and, This has spawned a whole host of keyword density theories. For example, keyword density between 5%-8% is the best, more than 10% is dangerous and so on.

In fact, this is wrong, why is it wrong? Let me explain:

1. The principle of Keyword query tool and search engine to the keyword judgment Way is different.

The principle of keyword query tool is actually very simple, is the ordinary text query tool, Notepad lookup function is the same, the query tool on this basis added to the text of the statistics and the proportion of the total number of characters. Search engines are different, search engines on the basis of text on the text to cut the word, It also contains semantic judgments and so on, website, website production is two words to the engine, the former is the word, the latter is the former, or it is called the long tail. For this thing, when the search results return, the snapshot does not appear like this, but the word is cut, but the density is calculated to include semantic analysis. (I will write a detailed description of this section)

2. There are many cases that contradict the theory that keyword density should remain in 5%-8%.

such as an industry station, like English learning site, the frequency of the word in English is definitely not less than 40%. But there are some keyword query program can not identify JS or other modules in the characters, detection results may be low. Like an English learning station, the density of detection is 12.8%, Higher than the standard recommended by the General optimization experts, but this station in Baidu search English this keyword, natural ranking is the first, Google in the top 10, Yahoo is also the first. This case is a good rebuttal to the theory of keyword density.

Down to add the knowledge of keyword piling, keyword piling is the traditional meaning of the text does not consider the semantics of the article and repeated the occurrence of a keyword, such as: Keywords keywords keywords keywords keyword keywords keywords keywords keyword keywords keywords keywords keyword keywords keyword keywords keyword keywords keyword keywords keyword keywords keyword keywords keywords keyword words ... This can be counted as a keyword piling.

The above is my general understanding of the keyword density of the correction, hoping to let SEO novice less take a detour.