This is a great question as we want to be very clear and concise on this question. The service will be free forever. The whole point of this is to bring users in and create an environment that then attracts merchants and other business like structures and they are the ones who get charged for certain services thus offsetting the cost for the standard user. Like I have said before when it comes to the pay structure think PayPal. Free for the normal standard user and merchants are the ones who pay fees for certain things, but even merchants can send funds from user to user for free, so we still offer some great benefits to them, so they aren't missing out on anything.

Thanks,
Aaron