Microsoft unleashed Windows 8 on the world today, in the form of a "Consumer Preview" (read: Open Beta), and it's definitely not business as usual. The OS is designed to work on both tablets and PCs, and that means that, while it still has a familiar Windows "Desktop" mode tucked inside, its default is a bold new "Metro" system that (gasp) does away with "windows" entirely. Apps, which must be purchased from the Windows Store, all run essentially full screen. Here's what people are saying: