Gist of this is that its a very easy-to-use animation app for the DSi. In minutes you can take your scribbles and bring them to life, even add sound if you wish, then upload them to the Flipnote site or turn them into animated/segmented gifs and load them on your PC.
Here's a sample of my work thus far (NSFW... maybe... but its not really what you think).
Anyway, I threw that together pretty fast.
So if you have a DSi, its up right now and totally free. Something else to keep me distracted from its gaming function, heh.