I recently listed something and someone clicked BIN. The transaction was clearly fraudulent (nothing showed up in my PayPal account, the shipping address was Nigeria even though I'd said ship to mainland UK, and the email from the buyer that was meant to be from PayPal did not link back to the PayPal website, etc).
Anyway, obviously I am not shipping the item!
I just wanted some confirmation that I am not expected to ship until the payment actually appears in my PayPal account.