From the nice people at Flowing Data.
Not entirely silly to post to a topic maps forum.
Watch the dedication of other users to “beat” the machine.
Now imagine extracting that sort of dedication in an interface that hand a more meaningful purpose.
Such as creating representatives for subjects and/or rules for mapping between the same.
Sure, it sounds boring and tedious when I say it, the question is how to make that dynamic and exciting.
Succeed at that, even partially, and you will have to fend off investors with a stick.