Register up to five friends in Northwest WorldPerk’s Refer-A-Friend promotion, and you could earn up to 17,500 miles through May 31, 2007. With the first roundtrip flight a friend takes as a new WorldPerks member, you will earn 2,500 bonus miles. With the second roundtrip flight your friend makes, you will earn 500 miles and for your friend’s third roundtrip flight, you will earn 500 miles. You can refer up to five friends to get these same bonuses. The total miles you can earn is 17,500. As an added incentive, and to get your friends’ WorldPerks membership off to a fast start, your friend(s) will earn 2,500 bonus miles for their first roundtrip flight as a WorldPerks member, 5,000 bonus miles with their second roundtrip flight and a whopping 10,000 bonus miles with their third roundtrip flight completed before May 31, 2007, for a total earnings of 17,500 miles. Go to http://insideflyerus.wpengine.com/link/?177 to register for this promotion.

And don’t forget, if you give Alaska Mileage Plan the e-mail addresses of up to five friends you will earn 500 miles for each friend who subsequently signs up to receive Alaska’s Insider e-newsletter.