I think people are missing the point, its not to do with the fact that its a prepaid card, but that the minute i get paypal funds, i can add it to the card right away and use that card (visa) to purchase anything i want in an instant.
Before i had to wait 4 to 5 days for it to transfer to my bank, before i could use it, now i can get paid at 3pm and spend it via visa anywhere in the world that takes visa cards.
On my Business site, i had the option of either going with worldpay for my merchant account to be able to take credit cards, they take a percentage plus you don't get your money for 30 days or so, So with paypal, someone pays me ?480, ?16 or that are Paypal fees the rest is mine, right away, as i add it to my visa card.
You need to look at all the options before deciding, but even with the ?16 fee, Paypal were cheaper and i got the cash 30 days quicker than had i gone with a merchant provider.
I agree Prepaid cards have been around for a few year, and even earlier in the states, But the one from Paypal actually lets you transfer your Paypal balance right away, and thats free to do that too