[iopq]

The problem with paypal is they have different APIs with different features that are non-overlapping.

There is no API that allows you to chain payments through my account to the seller and the affiliate when you check out multiple items when the user does not have a PayPal account.

That combination of features is mutually exclusive, but it should be like the most common thing in the world for an e-commerce website with an affiliate program and multiple item check-out.