[awein999]

1) Super jackpot for guessing right on the number.

2) Closest average guess after x days. x number of minimum amount of submissions required. Some type of jackpot for this.

example:
guess:
12,300,000
13,000,000

answers:
14,300,000
14,000,000

differences:
2,000,000
1,000,000

average equals 1.5 mill arrows off. Most accurate average wins.