I don't think linking to tools to aid piracy really is acceptable. As much as I think Windows isn't worth paying for you still need to respect M$ property.
I'll admit it does aid piracy but, as a Windows user, I've been told that my version of Windows wasn't Genuine often enough that I don't give a damn. My versions are all bought and paid for but, through software bugs @ MSFT, they get treated sometimes as pirated. When you make me upset, I wish the whole Genuine Advantage thing would go away because it's so invasive and buggy - maybe this will be a means to that end.