Its one of those "congradulations you have won one of 5 amazing prizes"  then they tell you that you have to come and pick up the prize with your husband/wife, but first they make you sit through a very pressured time share speech that takes up about 2-3 hours of your evening.  They do give you the prize at the end of the day but they're still not "free" prizes since you are responsible for taxes and other fees.  Its still cheaper than paying for a vacation but its up to you if its worth your time.