Microsoft can remotly kill purchased apps

Meshach writes: The terms of service for Microsoft's newly launched Windows Store allows the seller to remotely kill or remove access to a user's apps for security or legal reasons. The story also notes that MS states purchases are responsible for backing up the data that you store in apps that you acquire via the Windows Store, including content you upload using those apps. If the Windows Store, an app, or any content is changed or discontinued, your data could be deleted or you may not be able to retrieve data you have stored.