Gandalf, I have to inform you that I've had quite a few ads redirect me from my current page on these forums lately, and they won't allow you to press the back button. You have to manually select it from the drop-down list to get back to the original page. Happened to me not even 2 minutes ago. Your ads are starting to become like MySpace's and slip in malicious adverts and redirects.
Just to answer the issue, yes, I am in the United States.