You know, the $2000/sec figure didn't sound that impressive until I did the math. Paypal seriously processes $63 billion a year in payments? That kind of surprises me.<p>Also, the chained payments feature sounds like exactly what I have been looking for on one project. Last I checked, you couldn't do this with FPS. The closest you could get was authorizing multiple receivers at the same time, but they would show up as individual charges on the bill. (If that has changed, feel free to point it out to me.)
PayPal should work on improving their documentation for their developer API before they push out new features. We went with Google Checkout just because the documentation was so much better.
Does anyone know if this will require PayPal logos and/or PayPal accounts for end users or is a completely transparent API like Authorize.net? The Amazon account requirement for FPS makes it a non-starter for me.