The (secret) opt-out URL is:
https://www.paypal.com/nothanksDon't you just love it when businesses trying to push something you don't need and never asked for make you choose "No, thanks" for their pestering to stop. How about simply: "No!" (possibly with an exclamation mark)
In PayPal's case, a firm "no" without a "thanks" just redirects to their Norwegian website: https://www.paypal.com/no
So to opt-out you still have to thank them. Maybe I shouldn't give them any ideas but they could even spin it as "millions of PayPal customers express their gratitude for debit card offer."
