I'm a little bit confused about how the multisite / multi-store system is meant to function.
Using Framemarket and Marketpress:
Is this a single checkout global shopping cart where users can add products from various stores across the network and checkout one time?
If global products appear on the main site, how does each store receive the payment for their goods?
I see that each store can setup its own payment gateway, is there an option to allow individual carts, or require a global cart?