Architecting WP7 - Part 6 of 10: Loosely Coupled Messaging

While I recognize my original schedule is slipping, let's continue the ten part Windows Phone 7 architecture discussion. In this sixth part of the article series, I want to discuss messaging in phone applications. When I say "Messaging", I don't mean SMS or IM, but instead I mean smart ways of being able to talk between different parts of the application. As you build an application in a loosely