While Meta tags are not the complete answer to the question of “How do I improve my search engine ranking?” they can help with some search engines. Since there are millions of pages with Meta tags, you can add all the pages you want and still not control a sizeable percentage of the pages on the World Wide Web.
What are Meta tags? They are information inserted into the “head” area of your web pages. Other than the title tag, information in the head area of your web pages is not seen by those viewing your pages in browsers. Instead, Meta information in this area is used to communicate information that a human visitor may not be concerned with. Meta tags, for example, can tell a browser what “character set” to use or whether a web page has self-rated itself in terms of adult content.
Meta tags may help you with some search engines, so you’ll want to consider adding them to every page you create. On the other hand, you can find many highly ranked web pages without Meta tags. For example, Meta tags have no effect on how humans will view your pages and enter your information into directories like Yahoo.

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