DANGER! New IE exploit!
Click on this button, and then check the address bar. Are you where it says you are?
This is bad because I could have tricked you into thinking you were anywhere I want, and then created a page that looks indistinguishable from the real site. I could have made a fake CNN, or Paypal, or anything. And it didn’t have to be a button either, I could have done it as soon as you came to this site. The next Google search result you click on could do this.