Originally Posted by T.G

Besides the obvious fact that in the terms and rules of the promotion it states that by agreeing to the promotion terms, you are submitting your information for their marketing purposes and cutting this off early, from a marketing data and metrics collection standpoint, is foolish.

The submission collection process is very fast and easily automated. Simply toss up a form and have people enter data.

Unfortunately, the verification of this entered data does not happen as quickly. Addresses need to be verified, duplicate addresses need to be matched and discarded, ages need to be searched and verified, illegitimate email addresses need to be tossed, people setting up multiple accounts need to be disqualified, etc.

All of this prevents the automation of an automatic cutoff at the X-many entry mark.