Another shady “competition” is the “complete this form and get a laptop”. Except it’s not just this form, it’s this form, and this form, and this form, and this form... until the user gives up.
Each of those forms goes to a sales call list. And when you give up, you’ve already completed half a dozen forms - and you’ve given all that data for free.
If somebody does ever complete all of the forms, they get told the laptop is now out of stock - but here’s a free £50 voucher for Amazon.
I know some people who automated those but basically fed them fake generated data, and managed to make quite a bit before they got banned. Probably not legal, but AFAIK the responses to those surveys aren't legally binding either, and the more "poisoned the well", the less profiling and tracking they can do, so I don't have any moral problems with that.
Each of those forms goes to a sales call list. And when you give up, you’ve already completed half a dozen forms - and you’ve given all that data for free.
If somebody does ever complete all of the forms, they get told the laptop is now out of stock - but here’s a free £50 voucher for Amazon.