It is an awesome idea, and simply amazing how quickly it has taken off. Reminds me a bit of
, which is an awesome thing that you should put in all apps that you are building. We need a built_with as well I think...but, that is a movement for another day.
The Why, How, What layout was inspired by
and his quest to inform the world about how important it is to have your "Why" defined.
This TED talk
of his is what started my obsession with Why...I think it is well worth your 18 minutes.