Isn't this bordering on illegal? It sounds like they want to resell one ISP's bandwidth to another. As I understand it ISPs are already upset about bittorrent because it circumvents their commercial upload services by hijacking consumer bandwidth.
It's letting consumers resell their bandwidth on-demand to (I suppose) whoever needs extra I/O right now.
Frankly, I love the idea of reselling bandwidth, it's reminiscent of selling power back to the grid.
As for upload speeds/services, I think that's all going to go away pretty soon -- the DSL/FIOS/Cable wars are heating up (at least here in NYC) and they're starting to compete in upload bandwidth. AFAIK, cable-internet systems are usually built with an asymmetric bias for downlink speeds, while the other two aren't.
It sounds like a terrible idea.