Elevator speech

OK get this. A distributed system for people to send and
receive payments anonymously, instantly, reliably, and for
free. Payments are made in a new kind of money whose total
supply is limited and not controlled by any party.
e-commerce would benefit and services, for example [[:Category:Escrow Providers|escrow]]
or securing and remotely accessing your [[wallet]], could 
be built on this technology.

Think BitTorrent meets PayPal.

Sound good? Well it already exists and I have x000 of 
them. Keyword: bitcoins.

*walks out of elevator*

Criticism

Except that bitcoin transactions are not sufficiently anonymous, instantaneous nor free.