Crowdini is a daily knockout answer contest. Every day there is a simple question for you to answer. You continue in the game if your answer is in the majority. The game continues until one person remains, then that person gets a prize, which is usually a giftcard of about $25 value. For more information check out their FAQ here:Log In
I used to play this about a year ago and completely forgot about it until now. Thanks for the reminder! It sure does look a lot more professional than it used to, which is nice.