"This is rather uncool, IMHO, I stumbled upon this forum entry
and was quite astonished. It points to the Microsoft Application
Provider Agreement that governs the Windows Marketplace, the App
Store where users can get apps and developers publish them.
"Now here's the fun part. In article 5, Microsoft explains the
Application Requirements that you need to fulfill to get your app
accepted in the marketplace. It's point E that is of interest
"e. The Application must not include software, documentation, or
other materials that, in whole or in part, are governed by or
subject to an Excluded License, or that would otherwise cause the
Application to be subject to the terms of an Excluded License.
"Note the full scope: in whole or in part. This means that you
cannot use Libraries that are under this ominous "Excluded