First off, I wil say that I don't currently have SiteAdvisor on my computer but have used it in the past and really appreciate the added security it provides. But today I saw the post on Facebook about the SiteAdvisor Social utility and was anxious to try it.
I had no problems with the install (I use Firefox 6). After installing I simply closed and reopened a new browser and logged into Facebook and there were the familiar little green checkmarks!
I am so glad McAfee has created this utility! It is a MUST HAVE for anyone who frequents Facebook, Google+, or LinkedIn. This will really help against phishing attempts from compromised friends' accounts.
Awesome - we're glad you like it Kim.