Consumer promotions simply don’t work anymore, they’re old world. Bribing your audience with the allure of a car or holiday won’t build your brand, rather damage it.
They remind me of the kid with no friends who bought companionship because they had a motorbike or pony. There is a sense of desperation. Occasionally someone will end up liking what’s really on offer (the person / the product), but more often, once the offer disappears so does the loyalty.
If you’re thinking of running a consumer promotion on your start up, maybe you should think about improving your business model. Reinvest the money and time into your proposition. Something is wrong.