narramissic writes "Microsoft has identified 12 application types that won't be accepted at the MarketPlace for Mobile store. Among them: VoIP apps, programs that are larger than 10MB, and programs that change the default browser on a device. Overly restrictive? Maybe. But perhaps the clear set of rules (PDF) will prevent confusion similar to what's been encountered over Apple's policy for approving or rejecting applications from the App Store."