Looks fantastic. I'm interested already and we don't have an immediate need for the API - but even the web UI looks great.

Very little information on your site, though. Some questions strike me:

- What path does the money take from the customer to the user of your service (e.g. me), and how long does it take to get there?

- What kind of backing/insurance/licenses do you have? If you're a tiny startup, there's risk for users of your system if you go bust and any money in transit disappears.