Here's how it works:
The prize for each week's contest will be announced in a Tweet a few minutes before the question is posted.
Once the question is posted, reply @memphisflyer to enter.
The first correct response wins. Twitter timestamps are by minutes (not seconds), so if there is not a clear winner, correct responses from the first minute will be entered into a random drawing to select a winner. The winner will be contacted via Twitter Direct Message with details about claiming the prize.
Lastly, if you win, you cannot win again for one month. You know, just to spread the love around.