Ei!!.. I've been using Mollom to get rid of spams for more than 2 weeks now, so far so good, I mean really good. Thanks to Mollom, I get more ham(authentic posts) rather than spam, and you can actually check it on the graph provided in their Mollom settings page. Mollom can be use in other CMS also, like Joomla or Wordpress, and not only that, they provide Mollom API so that you can use Mollom on your favorite website creation tool. Isn't that cool?

But for me, it's like, Mollom + Drupal = One Good Frappuccino, haha. What are you waiting for? Get Mollom here, http://mollom.com/download.