Monetizing a Windows Phone Application discusses various ways for developers to monetize their Windows Phone apps, including:
1. Joining the Windows Phone Marketplace for $99 per year to publish and sell apps, with developers receiving 70% of sales.
2. Apps can be free or paid, with developers limited to 100 free apps per year but unlimited paid apps.
3. The document provides tips for increasing monetization such as using trials, live tiles with push notifications, ads, pricing strategies, and localization.
4. It introduces the Marketplace Test Kit for validating apps before submission and the new private distribution service for targeted beta testing before full publication.