Shock! Horror! Macro Viruses for OSS

This explains why macros are generally a bad thing to use in word processors or spreadsheets (yes, I know they can be useful, too). It is also a warning to OSS activists not to hit the "OSS is immune to viruses" button: it may be true now, but it sure won't be in the future as OSS enters the mainstream. (Via LWN.net).