Afraid Microsoft's anti-spyware will muck up your hard drive, erasing your digital photos, music collection and work files? Don't worry, you've got a $5 rebate coming your way in this worst-case scenario--enough to buy five songs on iTunes. That is, if you read and take advantage of Microsoft's legal promise. According to the AntiSpyware Beta end-user license agreement (EULA), Microsoft will reimburse direct damages up to $5 for problems associated with the new downloadable tool that wards off spyware, adware and any other "potentially unwanted software." "It also applies even if Microsoft knew or should have known about the possibility...