Siteadvisor is an excellent program that checks websites for malicious activities. A Green check mark means the site has been tested and is safe to use. A Red X means there are reports of malicious activities on the site. These sites could possibly be harmful to your computer. A Yellow Caution means the site possibly has links to harmful sites. These sites aren't necessarily bad, but I would use caution. I have a link to Site Advisor on the right side of my blog near the bottom. I would recommend using this program. Click on the pic for full size.
