Most of us who receive an email stating we're lucky winners of 500 units of cash money from PayPal might brush it off as a phishing scam. But what happens if the email looks legit? And what if PayPal was genuinely running a promotional campaign offering that amount to 10 random people each day, as long as they used the service that week? You'd be forgiven for believing it. That's exactly what happened to some PayPal u