Recently Matt has been working on a tool that will help WordPress bloggers from comment and trackback spams. The tool is called Akismet and it is a web service. So you don’t need to do anything except uploading Akismet into your wp-content/plugins directory and let Akismet does the real work for your weblog. Unfortunately you must have the WordPress.com API to activate the service. But don’t worry, as you already know you can get a WordPress.com account if you use Flock. Thus, get in one over here.
Please visit this website to get more information about Akismet, http://akismet.com/.