This is a demo application provided to follow the tutorials from Scalr.
This application is obviously insecure (and useless), and should not be used for anything but following the tutorials.
You can follow the tutorial on the Scalr wiki.
To help follow the tutorials and debug mistakes, this application will reveal the username to the database it is used with.
You should only use this application with a throwaway farm that you use to follow the tutorial.
You should not deploy this application on a farm used by any service.