@otherguyx - the yellow rating is probably due to the fact we have full URLs to malware in the list pages. I had to have symantec re-review the site for that reason a while back. It is a security research site, not a drive-by site. As for urlvoid, their purpose is to aggregate all those services for a consensus opinion as to whether a site is bad or not. No single service can know every bad URL out there, and most are based on just what they've seen. One way to use urlvoid would be to take a warning about a site if any single service calls it bad, but it could also be a false positive. Again, that's why they use so many. As for which DNS service, I know a lot of people happy with clearcloud, and not very many false positive blocks. Again, it is not a magic bullet. There is no magic bullet to protect you from every possible form of malicious code.