I have high hopes for this *not* being a MS shill project. Why?
Try going to a 404'd page on that site. You'll see they're eunning Ubuntu. That's actually a fairly rare server OS - You'd expect Debian, CentOS, RHEL or *shudder* MS Windows Server/IIS.

If the company was a MS company, you bet they'd be running IIS, because their devs would know it. And if they were trying to fake people out, they'd probably use, say, CentOS. Not Ubuntu.