Let's see, a direct query returns a Windows http header. Looking through the pages shows they use ASP pages. They also use the Red Dot content management system, which runs on -- you guessed it -- Windows.
Time for you to retract and apologize.
There are several articles out there to prove it too, since it actually matters
No, it doesn't. That's the whole point, just like Planned Parenthood running Windows doesn't matter.
They must have just switched then, unlike Howard Dean and the DNC who have been building their platform called "Open Source Politics" for a good while now. Ever heard of Joe Trippi? Former Linux exec that works for Dean and helped Dean coin the slogan. Check some of those links, open source is thriving in the DNC, and within Democratic/Socialist/Communist parties all over the world, they're even working to pass laws to require it. Leftist laws requiring open source, you probably even want them too.