There's a letter circulating, purportedly from Peruvian Congressman David Villanueva Nuñez to Microsoft Peru, which cuts the heart out of Redmond's chief 'panic points' to chill those considering open-source migration. Apparently, the Peruvian government is considering a bill mandating open-source software for all public bureaux. From the congressman's letter, we gather that MS had circulated a FUD communiqué calculated to frighten world + dog with images of collapsing domestic software markets, spiraling costs and systems migration nightmares. Villanueva Nuñez slices and dices with great skill to reveal the internal inconsistencies, unsupportable claims and irrational conclusions which the MS flacks trade...