500 Free Continental OnePass Miles
Continental is known for giving away miles for "learning" about their new OnePass promotions and initiatives. While they are usually only 250 miles a pop, they can add up. I think its funny that I can get more miles signing up for these promotions, than I can for flying (Continental does not have a 500 mile minimum for non-elites).
Anyway, enter the promo codes and your OnePass numbers here to get the bonus (usually takes a couple weeks to post)
Promo codes: 59073, 59074