Microsoft has its own SDK for Adds in Apps, but I am not sure whether other ad networks are disallowed: http://msdn.microsoft.com/en-us/library/hh506371(MSADS.

Microsoft has its own SDK for Adds in Apps, but I am not sure whether other ad networks are disallowed: http://msdn.microsoft.com/en-us/library/hh506371(MSADS.10).aspx http://msdn.microsoft.com/en-us/library/hh506371(MSADS.10).a...