This looks fun. An all-time leader-board based on % accuracy, rather than correct guesses would be more useful. Or at some point it should be based on % accuracy with a minimum # of correct guesses.
Yeah that's a good idea, it does seem like that might be a better indicator for the "All Time" leaderboard. It would be difficult to have a minimum for "Today" though, given that nobody would show up for the first few hours
It's still open as to how the leaderboard should be ordered, there could eventually be a points-based system that rewards other stuff too e.g. a run of correct predictions would give you extra points etc...