Version 1.0.3.4 is out. I've addressed a request made by a couple of people: now you have the option to compete only against yourself (the program will submit a score if it beats your own previous scores) or against everyone registered to your application instance (all user-names that've played the game on a particular computer). The default is to compete against yourself:

The inline Help pdf addresses this option.
If you've already installed the program, you need only update it using "Help"->"Update".
This version also addresses a small cosmetic "bug" in previous versions (which others may not have noticed, but which caught my eye). While the splash screen is showing, there is no longer a funky taskbar icon related to it.