HelpConsole 2008 SP1

Keywords help search engines better identify what the page is about. Because of susceptibility to manipulation, some search engines (such as Google) ignore keywords and rely on page description and actual text found on the page to determine what your page is about.

Tips for creating page keywords

A keyword is actually an expression; "nature photo gallery" is one keyword, and "art, photo, gallery" is three keywords.

Choose keywords that are between 50 and 250 characters long
Separate keywords with commas, not spaces
Do not use 'hard-returns' (do not click the 'Enter' key while entering text) as those paragraph breaks are not supported
Find a balance between generic terms like "nature photo" and targeted keywords like "Yellowstone National Park nature photo." The more generic the keyword, the more competitive and harder it will be to get top search page placement. On the other hand, the less generic the keywork, the less likely it is to be a commonly searched for term.
Continually monitor and optimize your keywords to find the ideal keywords for your particular products and services in your particular market. Keyword popularity changes constantly, so it pays to be diligent