I was checking out the latest technology headlines at CNN and came across this article called:
Spyware: Sneaky, annoying threat which makes for interesting reading.
I've touched on this subject before. Spyware that hijacks browsers or affects computer performance is a nuisance and a half. It's a good thing that there are programs out there that can be used to battle the problem, such as AD-AWARE. If you don't want to infect your computer with spyware, I suggest you don't install freeware on your computer such as mp3 sharing programs or free games. That's the source of most spyware in the first place.