Microsoft hopes PreApps site will help Windows 8 developers create pre-ship buzz and ultimately build more useful apps From InformationWeek:

For all the griping over Windows 8's omitted Start menu and other UI inelegancies, the biggest knock against the OS has arguably been its comparatively weak app catalogue. PreApps, a site that previews new apps before they hit the market, wants to change that.

The Boston-based startup only launched in January, but it has already forged a partnership with Microsoft. The deal will enable Windows developers to interact with potential users while building their apps, helping programmers build buzz and implement feedback-driven refinements as they approach an app store release.

 Microsoft Windows 8 Apps Get Preview Site