Exchange has been taking significant heat from beta customers that neither it (nor Monad) align strongly with the Windows Live corporate strategy. This is blocking adoption by many customers, especially those accustomed to the new Windows Live Mail (Kahuna) interface.
This change brings some of that branding synergy into the get-childitem cmdlet.
You can get a prototype of this new functionality here: dir-live.msh.txt (7.23 KB). Rename to "dir-LIVE.msh" after downloading. This is a breaking change, so please provide us with your feedback.
[Edit: Alas, this was not meant to be. Perhaps in version 2. Happy April Fools' :)]
[Edit: Monad has now been renamed to Windows PowerShell. This script or discussion may require slight adjustments before it applies directly to newer builds.]