his is called Google Bowling and its a common practice among black hat seo people. I warned about it several times and you can learn more about it here:
http://www.searchengineguide.com/michael-pedone/google-bowling.php
These assholes even offer Google Bowling as a service:
http://seoblackhat.com/2005/09/01/google-bowling-seo-black-hats-for-hire/
Hope this helps Merlin.
I hate this shit