32768
I just didn't notice this before. I think it is great that you are doing something so nice to breathe life back into the forum. I suggest that those racing this Saturday night tell people about it using in-game chat.
I was thinking about alternatives to the number guessing. Unfortunately, things like riddles can be looked up unless they are original, or they give an extra chance to win to those who see it first, which is not really in the spirit of what you are trying to do. So the best I can come up with is to stick with the number guessing but make it a prediction on some publicly available number. You could stick with random like asking people to predict what the final two digits of the Dow Jones Industrial Average will be on a given day. Or you could give people a chance to actually make a substantive prediction and guess what the whole number will be.
I will let you know if I get any other ideas. Thanks for doing this.