Dwolla. Sir Richard will find that he will be capped on the amounts of money he is able to move once banks see their profits dwindling.
The pct of the transfer is where the problem is. There is no way it costs anymore to transfer 100k 100m 100b. It is the same transfer. Charging percentages just like credit cards is a rip off.
I predict failure. In the LONG term nobody will want to see 1% of their money vaporize for a simple transfer.
He's probably already given the NSA a hotline to monitor all transactions.