I never got around to doing the merchant discount on PayPal. So I went to sign up and noticed they want an SS#. I'm not typically the super paranoid type, but... I don't recall them taking SS on the initial account start-up. Then on the other hand, I would assume they'd have it by now anyway, one way or another. Plus, I can withdraw as much as I want, so they must have it. But either way, I'm wondering why they ask for it to get the percentage discount.