Google is now displaying a warning in the search results about any site they know to be malicious.
Unfortunately, this can never be an ending task, however we need to be vigilant about it.

To enter a malisious site or learn more about it click here.

To spead up the process, ghettowebmaster.com created a button “skull” to the google toolbar that you can click when you are at a malware hosting url.

Click here to read the post and download the toolbar.