KV's come from jtagged xboxes that have not already been console banned for breaking microsoft rules. People make thir money back by reselling them and hosting MW2 lobbies with them.
They get it from a unbanned Jtagged Xbox. And they sell it to people so they can unban their Jtag. And no they can't unban it, or you sell it or you host and try to get your money back from donations.