Yes, there is a lot of ad providers for Android and iOS, few for Silerlight, and only counteable number of ones for Windows Store Apps. Now Microsoft release AdMediator for Silverlight and Store Apps, that (as far as I understand it) allows to provide mediation for any platform, having an appropriate adapter. Hopefully the support for Windows Store Apps is coming soon.
Yes, there is a lot of ad providers for Android and iOS, few for Silerlight, and only counteable number of ones for Windows Store Apps. Now Microsoft release AdMediator for Silverlight and Store Apps, that (as far as I understand it) allows to provide mediation for any platform, having an appropriate adapter. Hopefully the support for Windows Store Apps is coming soon.