While surfing I found quite a good little download which works with IE and Firefox, possibly other browsers too. It's called site advisor and when installed it shows a little icon in the bottom corner of the browser letting you know if the site that you're on is dodgy - eg it will tell you if any files you can download from the site have adware of viruses. I wouldn't trust it to be 100% accurate but it seems good and works as an extra line of defense. You can get it from: http://www.siteadvisor.com/ It's fairly basic but potentially useful, and free for now. It says techpowerup! is safe!!