Several of the anti-malware sites have been listed as 'red' by SiteAdvisor (SA) because of 'links to malware downloads'. These links are in HijackThis logs being posted by victims of malware. SA are aware of this and have now changed the rating to 'green'. I'm sure that their new crawlers will come out with more false positives on this. Just because site'A' links to bad site 'B' doesn't mean that site 'A' is bad.
IMO McAfee needs to get its act together or it will lose credibility, which would be a shame. SA is a very good program but they need to consider the context, as well as content, where links to bad sites are shown.