It brings up an interesting issue in terms of words though -- because "raffle" and "lottery" are not really appropriate -- they usually imply to most listeners that one has to PAY to have a chance, and this is not like that. And a contest implies that the "winner(s)" will be chosen based on some criteria, rather than randomly.-mouser
You don't pay, but you have to enter a valid email address, and this is not a zero value. So isn't this a raffle?
On the other hand you're required to write why you’d like to win the license. It implies that somebody would evaluate the answers. So isn't this a contest?
Anyway, my understanding of the term "giveaway" was also supported by the
Giveaway of the Day policy: everyone has a chance to get the item, no drawing lots, no probability involved.
EDIT: Dormouse beat me to it.