What are Meta Tags?
Meta Tags are a very important part of a web page. Meta tags are used by many search engines (not all) to get information about websites. This information is put into a database by the search engine and is then used to determine if your site should appear for specific searches and how high up on the list it should rank. There most important Meta tags are Keywords, Description, and the Title tag.
Visitors to a site do not see the meta tags excepte the Title tag located at the top of their browser.