Building a good app settings experience in XAML

So you've started to kick the tires of the Windows 8 Consumer Preview and now you are building an app.  You've read all the UX design guidelines and started looking at some great apps on the store.   Perhaps you've also viewed the online documentation and some samples?  And you've likely read about the contract implementations and other charms items like custom settings. 
What is Settings? When I refer to Settings here I'm referring to that consistent experience in Metro style apps when the user invokes the charms bar and chooses settings.  By default every application will respond to that Settings charm.  If you do nothing you will get the default experience that you may have seen:
Go to the complete details ...