Mailchimp: Sign-up process
Mailchimp's sign-up process uses a common deceptive tactic known as the "Trick Question".
Trick Questions
What's a trick questions? Common pattern used during sign-up flows. Usually, these are checkboxes located at the end of a form. At first glance, they all mean the same thing, but after the second reading, you see a completely different meaning.
Green Man Gaming: Check to unsubscribe
Classic example of a dark pattern during a checkout process - "Trick question".