Meta tags are part of the HTML source code and are used by many search engines to extract the information such as description, keywords author and so on. This is important for companies that are trying to get located into a search engine so clients can find that particular site. The best way of collecting or finding these keywords for a particular site are, e.g. think of the best words or short phase's that a person would type in to a search engine to find the contents of your site, "list them" then you have your keywords.

Here is an example of the keywords and description for this particular site.

Keywords:
Website designer,
web site design Australia, web developer australia, Designers,
web designers, Web, intranets, designer, a class web pages,
A-Class WebPages, Sydney Australia, australian web designer,
web marketing, site submissions.

Description:
Professional Web Site design at low
prices, designs to suit your business needs.

Copyright: (another useful meta tag)
copyright 1999 A Class Web pages.
All rights reserved. Material herein is the property of Travis York and should
not be reproduced without the written permission of the owner of the
copyright holder Travis York including duplication of artwork, graphics,
photographs, files, or any other content. Violaters will be prosecuted to the
full extent of any, and all governing statutes.