in you Plugin manager
"Akismet checks your comments against the Akismet web service to see if they look like spam or not.
You need a WordPress.com API key to use it. You can review the spam it catches under ?Comments.? To show off your Akismet stats just put <?php akismet_counter(); ?> in your template. See also: WP Stats plugin. By Matt Mullenweg."
guess what happens when you press the link