I have been entering your promotions for over 6 years and I could be wrong about this but I fail to remember ever winning anything worth over $50 (the few wins I've had over the past few years have mostly been things like free product coupons), yet I see the same people winning prizes worth multiple thousands of dollars. It leads me to believe I have been "listed" in some way for not having the correct demographic information and that the sweepstakes are in no way random. It has made me much less likely to enter your promotion and much less likely to be a customer of the products you are promoting.
Idea No. 16