I'm publishing using a key that I created in Xamarin Studio. Where is that key on the disk so I can take a backup of it?
windows is in C:\Users\USERNAME\AppData\Local\Xamarin\Mono for Android\debug.keystore
OS X is in ~/.local/share/Xamarin/Mono for Android/debug.keystore
http://developer.xamarin.com/guides/android/deployment,_testing,_and_metrics/MD5_SHA1/