It seems to me that this will provide customer validation of questionable quality to the entrepreneur. You can't effectively gauge the viability of an idea by asking people to predict the future. When asked; "Would you use this awesome service?", most people will say "Absolutely"! However, when the time comes to pay for it/download it they will not actually do it. Great looking site, however I feel like the data generated will be less useful than talking to your customers about their past behavior.