The Bloomberg app for Windows Phone includes integration with Twitter, email and Facebook and supports multiple sizes of Live Tiles. Whether you are a hyperactive daytrader scalping pennies, or a longer term position trader, you will find at least one feature of this app to be useful. And even if you're not a trader, Bloomberg has one of the best news agencies in the world. It is a free download for both Windows Phone 7 and Windows Phone 8 users.
For those sporting an iOS or Android device, don't be jealous. The Bloomberg app has been available for years as a free download for both platforms.
source: WindowsPhoneStore via WPCentral