Ah, yes. It saves your password in an encrypted format, on your local machine. We never share, steal, or do anything with your user information other than to log into the game. In fact, your user data is only used just long enough to get you into the game, and then the program ignores it.
Even still, I understand the concern. We will get on top of adding an option to store either just your username, or to enter your user/pass each time.
Regards, Kolya Venturi