You're only getting results relating to Windows because, so far as I can find or have ever heard, it is based on a system-level malicious modification that is only compatible with Windows (either registry mods, .exe infections, or .dlls).
If you're getting redirected to that website on a Mac, what is the exact setup: OS version, type of network, browser, and when do you get redirected? Does using a different browser make any difference? What about logging in as another user on the same Mac (create a new temporary user if you have only one)?