I have been using an add on to my browser calle WOT ( http://www.mywot.com/ )
WOT is a free Internet security addon for your browser. It will keep you safe from online scams, identity theft, spyware, spam, viruses and unreliable shopping sites. WOT warns you before you interact with a risky website.
Have a look at the Demo - http://www.mywot.com/en/demo
It is particularly good with Facebook when you are directed to external sites.
I'm sorry to be geeky at times but I just like to help people to keep their PC's protected.
Must have a look at this over the weekend. Cheers Terry! :)