Came across this Dr Web FF addon and right clicked/scanned the download link for Antivirus Pro 2009 which is a rogue app.
I've been using the Dr Web FF and IE addon's ever since Hazelnut mentioned them which is now a long time ago. Previously a few months ago it wasn't detecting some what I suppose were hacked sites trying to force the rogue AV2009.
Site Advisor was always, to me anyway, no more than a guide to the good and the bad, but I must say that with such a serious threat as AntiVirus Pro, which has been around for years, that's pretty shameful for there to be still no Red Flag after the first comment on that page was made back in June by a respected poster.