Normally after you see an Ad in NeoBux you get 3 chances of playing AdPrize to win either money or points or even an Golden subscription.
Now for two days, February 1st and 2nd, you get 4 chances per Ad and the chances of winning something have been increased. Aditionally you have 30 more minutes to use your chances to win.
As an advertiser this means that you fixed advertisements will get 30% more views during this period of time.