I didn't notice it before I saw your comment; I then tried it, and as a result, gave the "kudo" by accident too. This is a great example of beauty/fanciness != good user experience. There's no way to "unkudo" either, sigh..
I did the same thing, got momentarily distressed, then realized it means absolutely nothing in the grand scheme of things and smiled at a playful little implementation of a voting widget.
This is the show where everything is made up and the points don't matter.