Burger King is running a promotion that gives you more than the average fat food promotion would.
People who sign up for their Royal Perks program can claim a free Cryptocoin every day. That means you'll get perks for Burger King and you can make money at the same time.
They're giving away mostly Dogecoin, which isn't worth all that much right now. But they're also throwing in some Ethereum and Bitcoin, which are definitely currently worth some big dollars. There's a 1 in 9,091 chance you'll end up with the big money players. Not terrible odds, if you ask me. The promo is being run through Robinhood.