AdDuplex offers its services to Windows 8 developers
Windows Phone developers would need no special introduction to AdDuplex, a cross-promotion ad network specifically targeted at Windows Phone apps and games. Now they have opened up the service to Windows 8 developers. During the launch phase only XAML/C#/VB metro-style apps are supported but according to the blog post they plan to add support for other apps types soon. So if you are a developer of Metro apps for Windows 8, go ahead and check it out.