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The absence of any serious Metro style apps makes it hard to judge the platform, but you can get some clues from the sample apps. For example, the Stocks app allows you to enter a stock symbol and then "pin" the real-time trading information for that stock to the front page.
The more I use Windows 8, the more I realize it was designed as a “search first” experience. That search experience as implemented in the Windows Developer Preview is incomplete, especially when it comes to working with files. The ability to see full previews is essential, for example, and missing here.
I expect this to be a popular Windows 8 configuration. The Windows desktop (with all your familiar programs) in a full pane, and a new Metro style app docked to the side.