Whether you are an individual, hobbyist Windows Phone developer or part of a developer studio that builds Windows Phone apps, it?s quite an effort to develop, test, and market the apps.
Therefore, it hurts when an app submission fails certification, and you have to correct and resubmit the apps. Not only does it increase the effort and resources, it also delays the app release and any marketing plans.
Full story from the WPCentral blog...