Xamarin supporting Attachmate's Mono stuff means a lot to me, as a developer. I work for a company that does a lot of Mono-based consulting. This is going to sound like advertising, but having Mono for Android and MonoTouch makes life as a mobile developer easy. For example, my coworkers have been working on an iPhone application for a client using MonoTouch, using MonoTouch.Dialog. The client wanted a dual launch with an Android app, and since we were using all Mono-based projects in an MVC pattern, all we had to do was rewrite the UI for Android. Most of the screens had a lot code that could be reused with MonoDroid.Dialog. That means that even though the iPhone project started two months before the Android one, it only took one month to catch up to iPhone. That's two months that I spent utilizing my time towards other clients, and two months that we didn't have to bill to this client. When I punch those numbers into my calculator, it makes a happy face.