Ugh, that review leaves plenty of room for FUD. This excerpt for example.

    One of the worst aspects of Windows 8 for power users is that the product's very
    name has become a misnomer. "Windows" no longer supports multiple windows on the
    screen. Win8 does have an option to temporarily show a second area in a small part
    of the screen, but none of our test users were able to make this work. Also, the
    main UI restricts users to a single window, so the product ought to be renamed
    " Microsoft Window ."

They make it sound as though I can't have multiple windows open even in desktop mode. Furthermore, the option to show a metro app side-by-side is neither temporary nor difficult. In my multi-monitor Windows 8 setup I leave the Mail app open most of the day.