well I got a promo of 1 year free from siteadvisor plus and I never have an issues with it....is free why not . Beside siteadvior is base on people rating is the samething with like Avast 6.0's WebRep. The important things is the firewall and the antivirus + antispyware preventing from get into your compuuter, and the user habit of searching doing with their computer.
Just like most users of site advisor. Comes free with their ISP, computer, what-have-you.
Either way, it's all the same, just like WOT, Avast WebRep, and your "siteadvisor"...
It's nice and all, but the big problem still remains. They're all USER based claims, which means users can fudge the results. It can't and will not ever be replaced by and actual scan by a reputable A/V product.
Sure, it's nice to know that if 500 people visited a site and 485 of them reported the site as being a "bad" site, you might think that the site wasn't good. It really remains to be seen though if the site is actually infected or is hosting bad information or not, or if it just has a bad reputation because a bunch of retards visited the site and didn't know what they were doing.
Anyway, these technologies are nice, and I welcome the addition of webrep to the avast family of products and wish it well. I however, won't believe a darn thing that any company or software says (avast included) until I look at the code myself.
Again, enjoy your "site advisor" and believe what you want.