There’s a cocktail bar that offers you a free cocktail in exchange for a few personal details when you sign up to the mailing list.
Your name, email and date of birth.
I think it’s interesting that we’re willing to trade this information for a drink.
That drink might cost around $13 which is of course much more than it’s actually worth and if the glass is full of ice, it’s worth even less.
But for the bar it’s clear that giving out a free drink is worth it in exchange for your name, email and date of birth. Once you give them your information, whilst you get a free drink in return they now have permission to send you stuff and it might be stuff you don’t actually want.
More importantly, the free drink can only be redeemed by visiting the bar. So now you have to visit and when you do it’s more likely than not that you’ll also end up paying for drinks once you get you’re free one.