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Content-type Tag The Content-Type entity-header field indicates media type of entity-body sent to recipient. This is an optional tag.

Expires META Tag An optional tag that defines date when file will be considered expired in cache and a new page will be generated. Only use when your website is running a limited time event or there is a preset date when your document will no longer be valid.

Refresh META Tag An optional tag used as a way to redirect or refresh users to another web page after X number of seconds. This META tag is often used as a "bridge" page which is accessed first by users and are then redirected to another web page.

NAME Attribute tags with a NAME attribute are used for information types that do not correspond to HTTP headers.

Common Examples of HTTP-NAME Attribute Keyword Tag Search Engines that support META tags will often use keywords found on your pages as a means to categorize your website based on search engines indexing algorithms (proprietary algorithms which index your website in search engine databases).

Ensure you choose keywords that are relevant to your site. Avoid excessive repetition as many search engines will penalize your rankings for attempting to abuse their system. Search engines give priority to first few words in your description, so focus on your main keywords and then elaborate further by using synonyms or other related words.

Keyword values are usually separated by commas. The maximum keyword allowance is 1000 characters, however, it is believed that anything over 255 characters is ignored.

Description Tag Search engines that support META tags will often display Description META tag along with your title in their results. When creating your META tags, make first sentence of your description field capture attention of a user and use rest of description tag to elaborate further.

Keep this description to no more than 25 words (maximum allowance is 150 characters). Not all search engines recognize this tag.

Conclusion Don’t let your site be one of four web sites on Web that do not have Meta Tags. Optimize it now, so you have a greater chance to be listed in search engines. Getting listed, will bring more traffic which may mean more sales.

Herman Drost is a Certified Internet Webmaster (CIW) owner and author of iSiteBuild.com Site Design and Low Cost Hosting (http://www.isitebuild.com)