Actually, Search engines like google will bump you out for adding text at 1pt font to the footer of the site. The actual content of your site / along with link popularity is what will move you to the top. Keywords in your meta tags can only do so much.
All about how many click your link.
"To that end, we encourage site managers to make their content straightforward and easily understood by users and search engines alike. Unfortunately, not all websites have users' best interests at heart. Trying to deceive (spam) our web crawler by means of hidden text, deceptive cloaking or doorway pages compromises the quality of our results and degrades the search experience for everyone."
http://www.google.com/support/webmas...y?answer=35769