So I got my invitation code for Windows Azure last night, so I thought I'd deploy my first service to the cloud.
I got a little stuck for a while, I kept getting the error message "Invalid application domain name". It turns out that "silverlightuk" is not a valid name for my hosted service account.
In the end I went for chrishayuk.
So if you get this error message, you know you have picked a special name, and you need to pick another