<meta> The most important for search engines is the keywords (keywords) and the Web page description (description), in the HTML language form as follows:
need to note that currently only AltaVista and InfoSeek these two major search engines to support <META>, and some web designers built <meta> perfect, but found that their site is not used at all < After meta>, that is, even though the above search engines consider <meta> 's role, but compared with other factors is not the most important, many web designers think <meta> is to push their web site top secret weapon wrong.
should use <meta> on all Web pages, at least to increase the ranking of search engines that support <meta> functionality, and to tell the search engine how to display your page descriptions in the results list.
the keyword in the keyword (keywords), the keyword frequency rule also applies to <meta>, to make the text as concise as possible in order to increase the ranking score.
The Description section (description) provides an effective way to control the description of your Web page, replacing the Web page overview generated automatically by the search engine.
<meta> Precautions:
do not repeat the same keyword more than 6 times, for security reasons to recommend 3 times, otherwise the search engine will ignore your Web page or be punished. Instead of listing repetitive, linked keywords, it's easy to see that you're in spam, for example, if you have 3 keywords that shouldn't be arranged like this:
Limit your <meta> characters, keyword (keywords) part of the number of characters not more than 200 characters (including characters), the description section (description) not more than 150 characters (including characters), which is to want at all the support < Meta> 's search engine displays the maximum length of all text, otherwise the extra characters will be cut off.
should not have a carriage return in the HTML code of the <meta> element.
is also worth mentioning is the robot element (robots), it allows you to indicate that a page of your site is not indexed, in the form of:
<meta name= "Robots" content= "Noindex" >
but not all search engines support this tag, they collectively support a more powerful text file called Robots.txt to achieve the above function.
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