<META-NAME=“description” CONTENT=“…”> should be included on every page of your Web site. The description meta-tag is used to supply an accurate overview of the page to which it is attached. The description meta-tags can influence the description in the search engines that support them.
It is best to keep the description meta-tag to somewhere between 200 to 250 characters in total. Be sure to use the same keywords applied elsewhere on the page being optimized in the description meta-tag for consistency and relevancy.
It helps to include a call to action encouraging the target market to visit your Web site or take some other action, as this description is often what users see in the search results as a description for your site.