How do the instant payments work? Is my paypal going to get shut down for months due to a "fraud" alert being triggered from having tons of random payments sent

How do the instant payments work? Is my paypal going to get shut down for months due to a "fraud" alert being triggered from having tons of random payments sent to me? This seems like a great way to quickly cash out stolen credit card numbers to a bank account - how do you differentiate between something like that and simply a creator that got to the front page of Reddit and had a huge spike of legitimate traffic? If you fall over in the latter case, I'd be extremely pissed. (And if your answer is to rely on Stripe's fraud detection, it's very likely they will block exactly this kind of spike in usage from an otherwise unknown account). Finally, can you actually make money from a credit card payment of $1 when you only charge a 5% fee?