Who Hijacked Media Matters' URL?

MediaMatters.org is a website I use often to check on the facts in the media. I've always found them to be reliable, verifiable, and truthful. Apparently, someone out there doesn't agree with me.

If you go to their website using Firefox, the URL in the address bar reads as "http://mediamatters.org". Same for using the Home button on the site. But, if you use Internet Explorer or Opera, the URL in the address bar will read as "http://globalwarmingmisinformation.com/", and ditto for the Home button.

I don't know--yet--who's behind this, but I will find out.

UPDATE: As of 11:19, the url for the site, when viewed in IE & Opera, now reads properly as "http://mediamatters.org". However, entering "http://globalwarmingmisinformation.com/" still directs you to the MediaMatters website.