Spurred by a forum thread, and fueled by some free time at work, I slapped together a quick back-end for a duel ladder site. Eventually, it should get integrated into the main site (the one you see right now). For now, please test the interface here
Of course, if there are no bugs, you should start using using it as a sort of "prac database" of your 1on1 games! That means start Right Now
The only rule is that you cannot challenge someone ranked lower than you. However, if you really want to play them, just msg them on irc or something to see if they would challenge you. This rule might be dropped later.
And of course, uploading screenshots (to make sure the backend works fully) is encouraged!