It's been an itch at our work for the past five years, at least for me anyway (Table Tennis is our game of choice).

Unfortunately, this is not the type of thing the boss would be willing to pay for. He'd more likely just get us to build a module for our product to do it - in the vein of our "Pizza Friday" pizza ordering module (Tallies up all of the half-and-half orders, shows a history of orders in the "fat graph" and most importantly, prevents people ordering unless they've done their timesheets for the last two months).

However, I hope it works out, because it looks like a nice piece of software.