Remember when Windows Genuine Advantage became nagware, notifying you over and over again when it thought your copy of Windows wasn't legitimate? And remember when it started "checking in" with Microsoft every day? All's fair in the name of anti-piracy, Microsoft seems to be saying, and the latest rumor is that this fall Microsoft will make WGA mandatory on all Windows PCs, and what's more, will introduce a "kill switch" for Windows that will cause the operating system to stop working if the currently optional anti-piracy 'feature" isn't installed. Sounds peachy, huh? ZDNet blogger Ed Bott has more details. (P.S. If you're currently in WGA notification hell, My Digital Life has 15 ways to kill the WGA nag screen.)