What does MS get from having people use IE?

IE can give you viruses easy, because I've seen it in action. You open up some underground webpage and BOOM, you get a virus that gets past IE's most current crappy protection. Now when it comes to Firefox, I have rarely seen a page that could actually try to implement a virus or piece of spyware onto your computer. Hell, it might have just been something downloaded into the cache, but couldn't execute due to the browser not being IE. I've "never" actually seen any viruses or spyware downloaded into Firefox's webpage cache that actually took effect on the user's PC yet.

Obviously having a good antivirus such as NOD32 will prevent most of those webpage viruses, but there are always some brilliant script writers out there that are ahead of the game. That's how the new viruses are made, and soon to be reported by it's victims.