According to a mod on another board who called & inquired about this, they posted:
It's 40 questions, 8 weeks, no teams- individuals only, 1 question per day, correct answer will be given for previous question after it's finished, no point scores to redeem but correct answers get you entries into a sweeps for 1000's of prizes picked at random, top picks are for 200 Marlboro Ranch trips.
Guess we'll see...I'd be REALLY bummed if after completeing the 8 weeks I didn't win anything, but we'll see what the rules of it will be.