Like the idea...
I really did like the idea. I think it could be a great game, but I had a real problem with how the game played.
1. Your .swf file(the thing you moved) was too slow. You couldn't effectively dodge 0's nor catch helpful 4's unless u were in the right place.
2. Not enough 5's. I didn't see any.
3. Maybe set up a level system. (starts out easy, gets harder)
4. Other than that, great! I had another idea. at the end, u should say how many votes they got and what they're average was, (as in score)
Great idea, work with it!