They also sent an email on this. If you receive the email you could get the 30 points twice, once through the email link and once through the mypoints site. The email subject is "Win $5,000 for the Holidays"

Among some other free email points are 50 points for entering Compaq giveaway ("Want a FREE Compaq iPAQ and up to 275 Points?") - these are not instant points. And 50 points for entering a cruise giveaway ("Win a family cruise for 12! Get help toting the luggage.") - these are instant points.