unless your a scammer, never give back money to paypal.. let them lose out, not the honest people.
I only wish it was this easy with banks. Last year, someone sent me money by direct bank transfer, ACH payment with Chase bank. Once it cleared into my account, I released the bitcoins, then a few days later the transaction was reversed. I was under the assumption that ACH payments were cash equivalents and cannot be reversed once cleared. Shortly after, chase closed my bank account, flagged me as being involved in FRAUD so now they won't ever let me open an account with them. All in all, I lost a lot of bitcoins, money, got account closed, and labeled as fraud on their records. I have no idea what the scumbag reported to chase, but this is the worst possible outcome. Very expensive lesson for me.
Wow. That's intense!!