It's not offering any indication that Windows Genuine Advantage will follow suit, but Microsoft has just made the rather surprising move of shutting down its longstanding Office Genuine Advantage program. As with Windows Genuine Advantage, that program was designed to combat piracy and, as any Office user can no doubt attest, it wasn't shy to make its presence known -- warnings like the one above popped up when downloading templates from Office.com, for instance. Why the change? Microsoft isn't exactly offering too many details, with a spokesperson only going as far to say that the program has "served its purpose," and that Microsoft is "making several new investments that will al