5
Hi
There is a link on the google site somewhere (I haven't got it handy, sorry) which gives an overview of how the google ratings system works.
Unlike some other search engines, Google ignores meta keywords.
Things that google does care about are:
* The name of your page
* The density of keywords on the page (ie the search terms)
* How many other sites link to your page AND the popularity of those sites (a link from a highly rated site gives your site more 'google cred' than from a low rated site).
Other search engines do care about keywords and probably work differently. Since they tend to use the density of keywords to determine the relevance of a page, you should be careful not to duplicate your meta keywords. If you do, some search engines will assume you are trying to exploit this to increase your page ranking - they retaliate by dumping your rating !!