Good site.
I still like WOT better as my second layer of defense. "

Site Advisor by McAfee is good in adition to WOT "

Can be a competition to WOT now.
Now since WOT 3 Beta is released, I've seen the new WOT, related to SiteAdvisor's Users Responses, Site Rating Subject, and test message sources from different sources. I would say I would now support WOT more than SA now as WOT is now growing. "

sorry siteadvisor has become a joke since mcafee took over. its very biased. if there is a competitor they think ppl know very little about, they give the site a red rating until enough people complain.

also they refuse to use white and blacklist and instead base things on their own antivirus which everyone knows is loaded with false positives and limited detection of real viruses.

also they change the site color based on how many ppl complain. a site can go from red, to yellow, to green within a week.

so basically those who use siteadvisor are going for an unreliable source who uses biased opinions, complaints by others and their own av. "

Most of the time some dangerous or malicious site is rated green, and an unsuspecting user downloads a virus without even knowing, the good thing is that there's a lot of users, and most often a lot of comments. I would still prefer MyWot. "

ratings are very inaccurate "

McAfee SiteAdvisor frequently shows malware-laden sites to be clear of threats, and for some domains, ignores any negative comments from its users. That said, the SiteAdvisor Firefox extension remains a semi-useful tool with which to supplement other, better utilities. Having run both SiteAdvisor and WOT in parallel, I can say that WOT has picked up on more real threats than has SiteAdvisor. "

Its a nice idea (kind of like WOT) but its become utterly useless. The user reviews are full of people who know nothing. The rating system has become a popularity contest and not a way of telling a reviewers trustworthyness. Their auto-rating system is flawed, several good sites have een flagged red or yellow. Several very bad sites are green, probably due to the fact that Mcafee is terrible at catching anything. Stick with WOT it actually works.

Additionally the ad-on seems to install a Mcafee service (besides siteadvisor) that serves no usefull purpose and is concerning. "

I have used SiteAdvisor and I'm disappointed to say that it has a lot of false positives and less accurate detection (i.e. freescreensaver.com and antispyware.org).

Reviews tend to be inaccurate as they are bias (a couple users can mislead the reviews whilst Wot implemented an alogarithm which prevented from manipulation), weighted akwardly (red-linked sites = red site instantly), and generally useless (unless given a large user base).

Overall, it failed my expectations as a decent site advisor. I'm definitely picking MyWot. "