I tried a similar thing about a fad in Germany during the soccer WC but it didn't go anywhere as I sucked at marketing it.
Can you tell how you did marketing and especially how did you became the official T-Shirt for that facebook event?
It's very basic though and also in Flash so it won't run on iphone etc. =/
Yet it was fun too watch what people did with it so far.
Like my friend who did a series of videogame styled globes like this one.
http://www.snowglobecreator.com/?uid=52#featured