http://stopbadware.org/
We're entering a new phase here at StopBadware.org. Google -- which is one of our partners -- is now presenting people with a warning before they visit websites that have been reported to StopBadware.org as sites that distribute badware. These warnings currently link to a general page on StopBadware.org, but as we finish researching sites, we'll replace the general page with one of our individual website reports
Thank you Google, Lenovo and Sun Microsystems for throwing money at this project